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B2 noun #6,000 よく出る 7分で読める

親和性

shinwasei 上位6,000

練習する例文メモとヒント 親和性 30秒で

解説 親和性 in your Level:

At the A1 level, '親和性' (shinwasei) is far too difficult to use in daily conversation. However, you can think of it as the 'super polite' version of saying things 'go well together.' Imagine you have two favorite colors, like blue and white. In simple Japanese, you would say 'Ao to shiro wa suki desu' (I like blue and white). You don't need 'shinwasei' yet. You might see the kanji '親' (parent/close) and '和' (peace/harmony) in other words. Just remember that this word is for adults talking about serious things like computers or business plans. If you see it, just think 'they fit together well.' You won't be expected to use it in your own speaking for a long time. Focus on learning 'suki' (like) and 'aishou' (matching) first.

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At the A2 level, you are starting to learn how to describe relationships between objects. 'Shinwasei' is still a bit advanced, but you might see it in a technology magazine or on a website for a Japanese brand. It describes how two things 'fit' or 'work together.' For example, if you have a smartphone and a smart watch that work perfectly together, a Japanese person might say they have 'shinwasei.' You should continue to use 'aishou' for things like food or friends, but start to notice 'shinwasei' when the topic is more technical or professional. The key is the 'Wa' (和) kanji, which means harmony. This word is all about things being in harmony with each other.

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At the B1 level, you should begin to understand '親和性' (shinwasei) when you hear it in news reports or read it in business blogs. You are likely moving beyond basic 'likes' and 'dislikes' and starting to discuss more abstract concepts. 'Shinwasei' is a great word to use when you want to sound more professional. Instead of saying 'This app is easy to use on my phone,' you could say 'This app has a high affinity (shinwasei) with the phone's operating system.' This shows you understand that the relationship is more than just 'easy'; it's about how the two systems are built to work together. You should practice the pattern '[Noun A] to [Noun B] wa shinwasei ga takai.'

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At the B2 level, '親和性' (shinwasei) should become a regular part of your professional and academic vocabulary. You are expected to discuss complex topics like market trends, software development, or social issues. At this level, you must distinguish between 'shinwasei' (affinity/compatibility), 'gokansei' (interchangeability), and 'aishou' (personal chemistry). You should be able to explain *why* two things have affinity—for example, because they share the same design philosophy or target the same customer base. You can use it in presentations to justify why a certain partnership is a good idea. 'Shinwasei' is a powerful tool for logical argumentation in Japanese.

At the C1 level, you should be able to use '親和性' (shinwasei) with nuance across various domains, including its original scientific meaning. You might use it in a debate about urban planning, discussing the 'shinwasei' between traditional architecture and modern technology. You should also be comfortable using more formal variations like 'shinwasei o yuusuru' (to possess affinity) or 'shinwasei o takameru' (to increase affinity). You understand that the word implies a deep, structural alignment. You can use it to critique a marketing campaign that lacks 'shinwasei' with the target audience's cultural values. Your usage should feel natural and appropriately timed within formal discourse.

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At the C2 level, your mastery of '親和性' (shinwasei) allows you to use it in highly specialized fields, such as chemistry, philosophy, or high-level corporate strategy. You can discuss the 'elective affinity' (sentaku-teki shinwasei) of Max Weber's sociological theories in Japanese. You understand the historical development of the word from a translation of European scientific terms to its current broad usage. You can use it metaphorically in literature or high-level journalism to describe the subtle harmony between abstract ideas. At this level, you are not just using the word; you are wielding it to express complex, multi-layered relationships between disparate concepts with precision and elegance.

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練習する例文メモとヒント

親和性 30秒で

親和性 (Shinwasei) is a formal Japanese noun meaning 'affinity' or 'compatibility,' used to describe how well two things harmonize or integrate with one another.
Commonly used in business and IT to discuss synergy between products, brands, or systems, often paired with 'takai' (high) or 'hikui' (low).
It originated in chemistry to describe atomic bonding but has expanded to sociology and daily professional life to indicate a natural or logical fit.
Unlike the casual 'aishou' (chemistry), 'shinwasei' is an objective, analytical term suitable for reports, presentations, and academic writing.

The Japanese word 親和性 (しんわせい - shinwasei) is a sophisticated noun that translates primarily as 'affinity' or 'compatibility.' While it originated in the scientific realm—specifically chemistry—to describe how different elements or substances tend to combine, it has evolved into a ubiquitous term in modern Japanese business, technology, and social science. At its core, the word describes the degree to which two distinct entities harmonize, integrate, or function well together without conflict. In a technical context, you might hear it when discussing how a new software application interacts with an existing operating system; if the app runs smoothly and leverages the system's features naturally, it is said to have high shinwasei. In a sociological or marketing context, it refers to how well a brand's image aligns with a specific demographic's values. Unlike the more colloquial term 相性 (あいしょう - aishou), which is often used for interpersonal chemistry or romantic luck, shinwasei carries a more objective, analytical, and formal tone. It suggests a structural or inherent suitability rather than just a 'vibe.'

Chemical Origin: Originally used as a translation for 'chemical affinity,' describing the force that causes atoms to bond.
Modern Business Usage: Frequently used in synergy discussions, such as how two merging companies or two product lines complement each other.
IT and Design: Refers to the seamless integration of user interfaces or the compatibility between hardware and software.

このアプリはiOSとの親和性が非常に高いです。(This app has a very high affinity with iOS.)

新製品は既存のブランドイメージと親和性がある。(The new product has an affinity with the existing brand image.)

彼らの企業文化は我々の哲学と親和性が低い。(Their corporate culture has low affinity with our philosophy.)

電子書籍はタブレット端末と非常に親和性が良い。(E-books have a very good affinity with tablet devices.)

デザインの親和性を考慮して色を選びました。(I chose colors considering their design affinity/compatibility.)

Using 親和性 (shinwasei) correctly requires understanding its grammatical partners. Most commonly, it is paired with the particle と (to) to indicate the thing it is compatible with, and followed by adjectives like 高い (takai - high), 低い (hikui - low), 良い (yoi - good), or ある (aru - exists). It is not usually used as a verb directly, but rather as a noun that describes a state of being. For instance, in a sentence like 'A and B have high affinity,' you would say 'A to B wa shinwasei ga takai.' This structure is vital for B2-level learners who are transitioning from simple descriptions to more nuanced, abstract observations. In academic writing, you might encounter 親和性を有する (shinwasei o yuusuru), which is a very formal way of saying 'possesses affinity.' In business meetings, it is often used to justify a partnership or a design choice. If a marketing team suggests that 'Anime has a high affinity with soft drinks,' they are suggesting that the two markets overlap significantly and that a collaboration would be logically sound.

Standard Pattern: [Noun A] は [Noun B] との親和性が高い。 (Noun A has high affinity with Noun B.)
Negative Pattern: この二つの素材は親和性が低い。 (These two materials have low affinity/compatibility.)
Modification Pattern: 親和性のあるデザインを採用する。 (Adopt a design that has affinity/compatibility.)

リモートワークはIT業界と非常に親和性が高い働き方だ。(Remote work is a way of working that has a very high affinity with the IT industry.)

彼の提案は我々の長期的な目標と親和性がない。(His proposal has no affinity with our long-term goals.)

この地域は観光業と農業の親和性を活かした町作りをしている。(This area is building a town that utilizes the affinity between tourism and agriculture.)

You will encounter 親和性 (shinwasei) most frequently in professional environments. If you watch Japanese business news programs like 'World Business Satellite,' analysts often use it to describe market trends. For example, they might discuss the shinwasei between social media platforms and e-commerce. In the tech world, during product launches or developer conferences (like those held by Sony, Nintendo, or Japanese tech startups), speakers use it to describe how their new hardware interacts with legacy systems or how their software provides a seamless user experience. It is also a key term in academic papers across various disciplines. In psychology, it might describe the affinity between certain personality types and specific environments. In chemistry, it remains the standard term for chemical affinity. In recent years, it has even bled into lifestyle magazines, where editors might discuss the shinwasei between certain interior design styles and small urban apartments. It is a word that signals intelligence and a systematic way of thinking. When a Japanese person uses this word, they are looking at the 'big picture' of how things connect.

Tech Reviews: 'This stylus has a high affinity with the tablet's screen latency.'
Marketing Strategy: 'We need to find influencers who have a high affinity with our luxury brand values.'
Environmental Science: 'The affinity between these pollutants and the soil particles is quite strong.'

このプラグインはDAWソフトとの親和性を重視して開発されました。(This plugin was developed with a focus on affinity with DAW software.)

Z世代とこのSNSプラットフォームの親和性は無視できません。(The affinity between Gen Z and this SNS platform cannot be ignored.)

The most common mistake learners make is confusing 親和性 (shinwasei) with 互換性 (gokansei). While both can be translated as 'compatibility' in English, they are used differently in Japanese. 互換性 is strictly functional—it means 'can be swapped' or 'interchangeable.' For example, if two different brands of batteries both work in the same flashlight, they have gokansei. 親和性, on the other hand, is about how well things 'get along' or 'complement' each other. You wouldn't say two batteries have shinwasei; you would say a specific type of rechargeable battery has a high shinwasei with solar power systems because they conceptually and functionally enhance each other. Another mistake is using shinwasei to describe a person's liking for something. In English, you might say 'I have an affinity for jazz,' but in Japanese, you wouldn't say 'Watashi wa jazz to no shinwasei ga takai.' That sounds like you are a machine or a chemical substance. Instead, use 好み (konomi) or 興味がある (kyoumi ga aru). Shinwasei is for the relationship *between* things, not a personal preference. Finally, be careful not to use it in very casual settings; saying shinwasei while hanging out with friends at a bar might make you sound overly academic or like you're trying too hard to sound professional.

Shinwasei vs. Gokansei: Shinwasei = Harmonious fit/Synergy. Gokansei = Functional interchangeability.
Shinwasei vs. Aishou: Shinwasei = Objective/Technical compatibility. Aishou = Personal/Emotional chemistry.
Personal Preference Trap: Do not use 'shinwasei' to mean 'I like this.' It describes a relationship between two entities.

✕ 私はジャズとの親和性が高い。(Incorrect: I have high affinity with jazz.)

○ 私のライフスタイルはジャズの雰囲気と親和性がある。(Correct: My lifestyle has an affinity with the atmosphere of jazz.)

To truly master 親和性 (shinwasei), you should know the words that circle around it. 相性 (aishou) is the most common alternative, used for people, food pairings (like red wine and steak), or even colors in a casual context. If you say 'Kono futari wa aishou ga ii,' you mean they get along great as people. 適合性 (tekigousei) means 'suitability' or 'fitness' for a specific purpose, often used in legal or medical contexts (e.g., organ transplant compatibility). 融和 (yuuwa) means 'harmony' or 'melting together,' often used in the context of different cultures or groups blending into one. シナジー (shinajii) is the katakana for 'synergy' and is often used interchangeably with shinwasei in business, but shinajii implies a result where the sum is greater than the parts, whereas shinwasei just describes the quality of the fit itself.

相性 (Aishou): Casual chemistry. Used for relationships, food, and hobbies. 'We have good chemistry.'
互換性 (Gokansei): Functional compatibility. Hardware/Software parts that can be swapped.
適合性 (Tekigousei): Suitability/Fitness. Does this meet the required standards or criteria?
マッチング (Macchingu): Matching. Often used for job seekers and employers or dating apps.

このワインとチーズは相性が良い。(This wine and cheese go well together.)

新システムとの適合性をテストする。(Test the suitability/fitness with the new system.)

How Formal Is It?

豆知識

While the word sounds very 'Japanese' because of the 'Wa' (harmony) kanji, it is actually a 'wasei-kango' (Japanese-made Chinese word) designed specifically to translate European science. Today, it is so common in business that most Japanese people don't realize its chemical roots.

発音ガイド

UK ɕĩɰ̃ɰ̃aseː

US ɕinwaseɪ

Japanese is a pitch-accent language. In 'shinwasei,' the pitch usually starts low on 'shi,' rises on 'n-wa,' and stays high or slightly drops on 'sei.'

韻が合う語

可能性 (kanousei - possibility) 安全性 (anzensei - safety) 必要性 (hitsuyousei - necessity) 生産性 (seisansei - productivity) 具体性 (gutaisei - concreteness) 多様性 (tayousei - diversity) 客観性 (kyakkansei - objectivity) 継続性 (keizokusei - continuity)

よくある間違い

Pronouncing 'sei' as 'say' (it should be a long 'e' sound).
Over-emphasizing the 'n' (it should blend into the 'wa').
Treating it as five distinct syllables without the long vowel at the end.
Misplacing the pitch accent, making it sound like a question.
Confusing 'shinwa' with 'shinvwa' (ensure the 'w' is soft).

難易度

読解 4/5

The kanji are common, but the abstract concept requires B2 level comprehension.

ライティング 4/5

Requires knowledge of formal sentence structures and correct particle usage (と/との).

スピーキング 3/5

Easy to pronounce, but knowing when it is appropriate to use requires social intelligence.

リスニング 4/5

Frequently heard in news and business, often surrounded by other high-level vocabulary.

次に学ぶべきこと

前提知識

親しい (Shitashii) 平和 (Heiwa) 性格 (Seikaku) 高い (Takai) 低い (Hikui)

次に学ぶ

互換性 (Gokansei) 適合性 (Tekigousei) 相乗効果 (Soujou kouka) 妥当性 (Datousei) 一貫性 (Ikkansei)

上級

選択的親和性 (Sentakuteki shinwasei) 界面活性剤 (Kaimen kasseizai) 言説 (Gensetsu) パラダイム (Paradaimu)

知っておくべき文法

Noun + との + Noun

ブランドとの親和性 (Affinity with the brand)

Noun + が + Adjective (高い/低い)

親和性が高い (Affinity is high)

Noun + を + Verb (高める/損なう)

親和性を高める (To increase affinity)

Noun + のある + Noun

親和性のあるデザイン (Design that has affinity)

Noun + に + 対する + 親和性

環境に対する親和性 (Affinity toward the environment)

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レベル別の例文

この色とあの色は親和性があります。

This color and that color have affinity (fit well).

Basic A wa B to shinwasei ga arimasu structure.

このアプリは使いやすい（親和性が高い）。

This app is easy to use (high affinity).

Using shinwasei to mean 'fits well' with the user.

和食と緑茶は親和性が良いです。

Japanese food and green tea have good affinity.

Describing a classic pairing.

この服と靴は親和性が高いですね。

These clothes and shoes have high affinity, don't they?

Using 'ne' for agreement.

猫とこの部屋は親和性がある。

The cat has an affinity with this room (fits well).

Simple noun-noun affinity.

ペンと紙は親和性が高い物です。

Pens and paper are things with high affinity.

Describing a natural pair.

音楽とダンスは親和性がある。

Music and dance have affinity.

Abstract nouns with affinity.

冬と雪は親和性が高い。

Winter and snow have high affinity.

Concept-based affinity.

このスマホはWindowsとの親和性が高いです。

This smartphone has high affinity with Windows.

Using 'to no' (with) to specify the relationship.

新しい先生はクラスとの親和性が良い。

The new teacher has good affinity with the class.

Applied to a person's fit in a group.

このデザインは都会の風景と親和性がある。

This design has affinity with the city landscape.

Visual/aesthetic affinity.

キャンプはSUV車と親和性が高い趣味だ。

Camping is a hobby with high affinity for SUVs.

Connecting a hobby with a tool.

この料理はワインとの親和性を考えて作りました。

I made this dish considering the affinity with wine.

Using 'wo kangaete' (considering).

電子マネーはコンビニと親和性が高い。

Electronic money has high affinity with convenience stores.

Business/service affinity.

この言葉は若者文化との親和性が低い。

This word has low affinity with youth culture.

Negative 'hikui' usage.

スポーツと健康飲料は親和性が抜群だ。

Sports and health drinks have outstanding affinity.

Using 'batsugun' (outstanding).

SNSは口コミマーケティングと非常に親和性が高い。

SNS has a very high affinity with word-of-mouth marketing.

Marketing context.

この素材は肌との親和性が高く、アレルギーが起きにくい。

This material has high affinity with skin and is less likely to cause allergies.

Technical/medical context.

ブランドのロゴとフォントの親和性をチェックする。

Check the affinity between the brand logo and the font.

Design analysis.

アニメとゲームは非常に親和性が強い分野です。

Anime and games are fields with very strong affinity.

Using 'tsuyoi' (strong) instead of 'takai'.

その政策は国民の感情と親和性がないようだ。

That policy doesn't seem to have affinity with the citizens' feelings.

Political/social context.

クラウドサービスはリモートワークとの親和性が抜群に良い。

Cloud services have exceptionally good affinity with remote work.

Modern workplace context.

伝統工芸と現代アートの親和性を探る展示会。

An exhibition exploring the affinity between traditional crafts and modern art.

Artistic exploration.

この成分は水との親和性が低いため、油に溶けやすい。

Since this component has low affinity with water, it dissolves easily in oil.

Scientific/chemical context.

既存のシステムと新ソフトウェアの親和性を検証する必要がある。

It is necessary to verify the affinity between the existing system and the new software.

Formal business/IT context.

彼の経営スタイルは、ベンチャー企業の文化と高い親和性を示している。

His management style shows high affinity with the culture of venture companies.

Management analysis.

都市開発において、自然環境との親和性は欠かせない要素だ。

In urban development, affinity with the natural environment is an indispensable element.

Urban planning context.

この投資信託は、安定志向の投資家との親和性が高い商品です。

This investment trust is a product with high affinity for stability-oriented investors.

Financial context.

教育現場におけるタブレット導入は、学習意欲との親和性が期待されている。

The introduction of tablets in education is expected to have an affinity with the desire to learn.

Educational policy.

メタバースとブロックチェーン技術は、技術的な親和性が非常に高い。

The Metaverse and blockchain technology have very high technical affinity.

Cutting-edge technology.

企業の社会的責任（CSR）は、ブランド価値の向上と高い親和性がある。

Corporate Social Responsibility (CSR) has a high affinity with increasing brand value.

Corporate strategy.

この新薬は特定の受容体に対して高い親和性を持っている。

This new drug has a high affinity for specific receptors.

Pharmacological context.

多文化共生社会の実現には、異文化間の親和性を高める努力が不可欠だ。

To realize a multicultural society, efforts to increase affinity between different cultures are essential.

Sociopolitical discourse.

その哲学的な思想は、東洋の宗教観と深い親和性を有している。

That philosophical thought possesses a deep affinity with Eastern religious views.

Academic/Philosophical context.

サブスクリプション・モデルは、デジタルコンテンツの消費形態と極めて親和性が高い。

The subscription model has an extremely high affinity with the consumption patterns of digital content.

Economic analysis.

建築家は、建物と周囲の地形との親和性を最大限に引き出した。

The architect brought out the maximum affinity between the building and the surrounding terrain.

Architectural critique.

心理学において、自己概念と職業選択の親和性は重要な研究テーマである。

In psychology, the affinity between self-concept and career choice is an important research theme.

Scientific research context.

データの透明性は、ブロックチェーンの本質的な親和性と合致する。

Data transparency aligns with the intrinsic affinity of blockchain.

Technical/Conceptual alignment.

この文学作品は、死生観というテーマに対して独特の親和性を見せている。

This literary work shows a unique affinity for the theme of views on life and death.

Literary analysis.

地域通貨の導入は、地産地消の促進と高い親和性を発揮するだろう。

The introduction of local currency will likely demonstrate high affinity with the promotion of local production for local consumption.

Economic hypothesis.

マックス・ウェーバーが提唱した「選択的親和性」の概念を現代社会に適用する。

Apply Max Weber's concept of 'elective affinity' to modern society.

Sociological theory.

酵素と基質の親和性は、生化学的な反応速度を決定づける主要な要因である。

The affinity between an enzyme and its substrate is a major factor that determines biochemical reaction rates.

Advanced biochemistry.

言説分析を通じて、特定の政治的イデオロギーと大衆娯楽の親和性を解明する。

Through discourse analysis, elucidate the affinity between specific political ideologies and mass entertainment.

Critical theory.

量子力学の非局所性と、ある種の東洋神秘主義との親和性が議論されている。

The affinity between the non-locality of quantum mechanics and certain types of Eastern mysticism is being discussed.

Theoretical physics/Philosophy.

この詩篇における言葉の響きと沈黙の親和性は、読者に深い感銘を与える。

The affinity between the sound of words and silence in this psalm gives the reader a deep impression.

High-level aesthetic analysis.

グローバル資本主義とナショナリズムの奇妙な親和性が、現代の政治状況を複雑にしている。

The strange affinity between global capitalism and nationalism is complicating the modern political situation.

Geopolitical analysis.

抗原抗体反応における親和性の強さは、免疫応答の有効性を左右する。

The strength of affinity in antigen-antibody reactions determines the effectiveness of the immune response.

Immunology.

法哲学において、自然法思想と基本的人権の親和性は自明のこととされる。

In the philosophy of law, the affinity between natural law thought and fundamental human rights is taken as self-evident.

Jurisprudence.

類義語

相性適合性互換性共鳴

反対語

拒絶反応不適合

よく使う組み合わせ

親和性が高い

親和性が低い

親和性がある

親和性を高める

親和性を検証する

親和性を有する

親和性を活かす

親和性を考慮する

親和性を欠く

親和性を探る

よく使うフレーズ

親和性抜群

— Outstanding or perfect affinity. Used when two things fit together perfectly.

このソースは肉料理と親和性抜群だ。(This sauce has outstanding affinity with meat dishes.)

親和性を重視する

— To prioritize affinity. Often used in design or recruitment to emphasize the need for a good fit.

わが社はチームとの親和性を重視します。(Our company prioritizes affinity with the team.)

親和性が乏しい

— Lacking affinity. A more formal way to say compatibility is poor.

この提案は現状と親和性が乏しい。(This proposal lacks affinity with the current situation.)

親和性を生み出す

— To create affinity. Used when trying to make two disparate things work together.

新しい演出が観客との親和性を生み出した。(The new direction created an affinity with the audience.)

親和性を損なう

— To damage or diminish affinity. Used when a change makes things less compatible.

過度な広告はブランドとの親和性を損なう。(Excessive advertising damages affinity with the brand.)

親和性を確認する

— To confirm compatibility. A standard step in technical or business processes.

導入前に親和性を確認してください。(Please confirm the affinity before introduction.)

親和性の向上

— Improvement of affinity. A common goal in product development.

操作性の向上と親和性の向上を目指す。(Aim for improved operability and affinity.)

親和性をベースにする

— To base something on affinity. Using existing compatibility as a foundation.

親和性をベースにした提携。(An alliance based on affinity.)

親和性が鍵となる

— Affinity is the key. Used to highlight the most important factor for success.

このプロジェクトでは親和性が鍵となる。(Affinity is the key in this project.)

親和性を図る

— To attempt to achieve affinity. A formal way of saying 'trying to make things fit.'

周辺住民との親和性を図る。(Try to achieve affinity with local residents.)

よく混同される語

親和性 vs 互換性 (Gokansei)

Gokansei is about parts being interchangeable; Shinwasei is about things working harmoniously together.

親和性 vs 相性 (Aishou)

Aishou is emotional/personal chemistry; Shinwasei is structural/conceptual compatibility.

親和性 vs 適合性 (Tekigousei)

Tekigousei is about meeting a specific standard; Shinwasei is about a natural fit.

慣用句と表現

"水と油"

— Like water and oil. Used for things that have zero affinity and will never mix.

あの二人は水と油のような関係だ。(Those two are like water and oil.)

Informal

"阿吽の呼吸"

— In perfect sync. Describes a high degree of intuitive affinity between two people.

二人は阿吽の呼吸で作業を進めた。(The two worked in perfect sync.)

Neutral

"馬が合う"

— To get along well. A casual idiom for personal affinity.

彼とは馬が合う。(I get along well with him.)

Informal

"息が合う"

— To be in tune with each other. Often used for performance or teamwork.

ダンスのパートナーと息が合う。(I am in tune with my dance partner.)

Neutral

"肌が合う"

— To feel comfortable with someone. A more physical or intuitive sense of affinity.

あの人とは肌が合わない。(I don't feel comfortable with that person.)

Informal

"意気投合する"

— To hit it off. When two people find immediate affinity in their ideas or feelings.

初対面で意気投合した。(We hit it off the first time we met.)

Neutral

"似た者夫婦"

— A couple who have grown to resemble each other. High long-term affinity.

彼らは本当に似た者夫婦だ。(They are truly a like-minded couple.)

Informal

"類は友を呼ぶ"

— Birds of a feather flock together. Affinity based on similarity.

類は友を呼ぶというが、彼らもそうだ。(They say birds of a feather flock together, and they are like that too.)

Neutral

"月とスッポン"

— As different as the moon and a soft-shell turtle. Used for things with no affinity due to a vast difference in quality.

あの二つの製品は月とスッポンだ。(Those two products are worlds apart.)

Informal

"以心伝心"

— Telepathy / Heart-to-heart communication. Perfect spiritual affinity.

以心伝心で相手の気持ちがわかる。(I know their feelings through heart-to-heart communication.)

Neutral

間違えやすい

親和性 vs 親しみ (Shitashimi)

Both share the 'Shin' kanji.

Shitashimi is a feeling of familiarity/affection; Shinwasei is a property of compatibility.

彼に親しみを感じる。(I feel familiarity toward him.)

親和性 vs 和合 (Wagou)

Both share the 'Wa' kanji and mean 'getting along.'

Wagou is a more old-fashioned or religious term for harmony; Shinwasei is modern and analytical.

和合の精神。(The spirit of harmony.)

親和性 vs 適応性 (Tekiousei)

Both describe how something fits into an environment.

Tekiousei is the *ability* to adapt (adaptability); Shinwasei is the *state* of being compatible (affinity).

彼の適応性は高い。(His adaptability is high.)

親和性 vs 同質性 (Doushitusei)

Similarity can lead to affinity.

Doushitusei means being of the same nature (homogeneity); Shinwasei means fitting well together (even if different).

集団の同質性が高い。(The group's homogeneity is high.)

親和性 vs 親近感 (Shinkinkan)

Both involve the concept of 'closeness.'

Shinkinkan is a subjective feeling of closeness; Shinwasei is an objective relationship between two things.

このキャラクターに親近感を覚える。(I feel a sense of closeness to this character.)

文型パターン

AはBと親和性がある。

この色は青と親和性がある。

AとBは親和性が高い。

このアプリとPCは親和性が高い。

AとBの親和性を検証する。

新旧システムの親和性を検証する。

Aとの親和性を重視して選ぶ。

チームとの親和性を重視して選ぶ。

AはBと深い親和性を有する。

彼の思想は仏教と深い親和性を有する。

AとBの親和性を高める施策。

地域と企業の親和性を高める施策。

AとBの選択的親和性。

資本主義と倫理の選択的親和性。

Aに対する親和性の欠如。

現体制に対する親和性の欠如が目立つ。

語族

名詞

親和 (Shinwa - affinity/friendship)

親和力 (Shinwaryoku - affinity force/bonding power)

親和図 (Shinwazu - affinity diagram)

動詞

親しむ (Shitashimu - to become familiar with/get close to)

和む (Nagomu - to be softened/calmed)

和する (Wasuru - to harmonize/make peace)

形容詞

親しい (Shitashii - intimate/close)

和やかな (Nagoyakana - peaceful/mild)

使い方

frequency

Highly frequent in business, technology, and academic contexts.

よくある間違い

Using it for romantic attraction. → Using 'aishou' or 'suki'.
Shinwasei is too technical for romance.
Saying 'shinwasei ga ookii'. → Saying 'shinwasei ga takai'.
Affinity is measured as 'high/low,' not 'big/small.'
Confusing it with 'myth' (神話). → Using correct kanji 親和.
They are homophones but completely different meanings.
Using it to mean 'interchangeable'. → Using 'gokansei'.
Shinwasei is about harmony, not swapping parts.
Using the particle 'ga' instead of 'to'. → A 'to' B no shinwasei.
Affinity is a relationship 'with' something.

ヒント

Use it in Reports

When writing business reports, replace 'fits well' with 'shinwasei ga takai' to sound more professional and analytical.

Particle Choice

Always remember to use 'to' (with) when connecting two things. 'A to B no shinwasei.'

Opposite thinking

If things don't fit at all, 'shinwasei ga hikui' is polite, while 'kyozetsu hannou' (rejection) is strong.

Team Building

Use this word to discuss how new members fit into a team's existing culture.

Software Reviews

Look for this word in Japanese app reviews to see how it's used to describe OS integration.

Kanji Breakdown

Focus on 'Wa' (和). If you see 'Wa' in a word about relationships, it usually means something positive about harmony.

Pitch Accent

Keep the 'sei' flat and slightly long. Don't let your voice drop too sharply at the end.

Audience Fit

Use it to describe why a certain celebrity is a good 'fit' for a brand's commercial.

Chemical Context

Remember its roots in chemistry to understand the 'bonding' aspect of the word.

Avoid Personal Feelings

Don't use it for 'I like you.' Use it for 'Our working styles are compatible.'

暗記しよう

記憶術

Think of 'Shin' (Parent/Close) and 'Wa' (Harmony). A 'Parent' and a child should have 'Harmony.' That 'Nature' (Sei) of harmony is affinity. Shin-Wa-Sei.

視覚的連想

Imagine two puzzle pieces that are different colors but have the exact same edge shape. They aren't the same piece, but their 'shinwasei' is perfect because they click together.

Word Web

Chemistry Harmony Business Synergy Software Compatibility Social Fit Marketing Alignment Design Balance Inter-system communication

チャレンジ

Try to find three things in your room that have 'high shinwasei' (e.g., your laptop and its case, or your coffee and milk) and describe them using the phrase '[A] to [B] wa shinwasei ga takai.'

語源

The term '親和性' (shinwasei) was created during the Meiji era (late 19th century) as a translation for the Western scientific concept of 'chemical affinity.' Japanese scholars combined the kanji 親 (intimacy/closeness), 和 (harmony/peace), and 性 (nature/quality) to accurately convey the idea of elements naturally 'liking' or 'drawing toward' each other to form bonds.

元の意味： The original meaning was strictly limited to chemistry, describing the force that holds atoms together in a compound.

Sino-Japanese (Kango).

文化的な背景

There are no major sensitivities, but avoid using it to describe romantic attraction, as it sounds cold and clinical.

English speakers often use 'compatibility' or 'synergy.' 'Affinity' in English is often more emotional (e.g., 'I have an affinity for old books'), whereas 'shinwasei' is more structural.

Max Weber's 'Elective Affinity' (選択的親和性) is a foundational concept in Japanese sociology classes. The 'KJ Method' (Affinity Diagram) is a staple of Japanese management training. Tech reviews in Japanese magazines like 'Nikkei BP' use 'shinwasei' as a standard metric for gadget reviews.

実生活で練習する

実際の使用場面

Software Development

OSとの親和性
UIの親和性
既存システムとの親和性
親和性をテストする

Marketing & Branding

ターゲット層との親和性
ブランドイメージとの親和性
広告の親和性
親和性を分析する

Chemistry & Science

電子親和力
化学的親和性
成分の親和性
親和性を有する物質

Human Resources

企業文化との親和性
チームの親和性
職務との親和性
親和性を重視した採用

Interior Design/Fashion

空間との親和性
素材の親和性
色の親和性
親和性を活かしたコーディネート

会話のきっかけ

"新しいプロジェクトと、現在のチームの親和性についてどう思いますか？ (What do you think about the affinity between the new project and the current team?)"

"このデザインは、我々のブランドイメージと親和性が高いでしょうか？ (Does this design have high affinity with our brand image?)"

"最近の若者文化と、この伝統工芸の親和性をどう高めるべきですか？ (How should we increase the affinity between modern youth culture and this traditional craft?)"

"リモートワークと、あなたの職種は親和性がありますか？ (Does remote work have an affinity with your type of job?)"

"このアプリと、あなたが使っている他のツールの親和性はどうですか？ (How is the affinity between this app and the other tools you use?)"

日記のテーマ

自分の性格と、今の仕事の親和性について書いてみましょう。 (Write about the affinity between your personality and your current job.)

最近購入した製品で、既存の持ち物と一番親和性が高かったものは何ですか？ (What is a recently purchased product that had the highest affinity with your existing belongings?)

将来、どのような技術が人間の生活と最も親和性を持つようになると思いますか？ (What technology do you think will have the most affinity with human life in the future?)

異文化間での親和性を高めるために、私たちができることは何でしょうか？ (What can we do to increase affinity between different cultures?)

デザインにおいて「親和性」が重要な理由を、自分の経験から述べてください。 (State the reason why 'affinity' is important in design based on your own experience.)

よくある質問

10 問

You can, but it sounds very formal or clinical. It's better used for how a person fits into a company culture or a technical role, rather than how two friends get along. For friends, use 'aishou.'

Generally, yes. Having high 'shinwasei' is considered a good thing because it implies harmony and lack of conflict. However, it can be neutral in a scientific context.

Synergy (シナジー) implies that 1+1=3 (the result is greater than the parts). 'Shinwasei' just means the parts fit together well. High 'shinwasei' often *leads* to synergy.

Yes, it is acceptable, but 'shinwasei ga takai' (high) is much more common and sounds more natural to native speakers.

It's common in work settings and when talking about gadgets or hobbies like fashion/interior design, but you wouldn't use it to talk about your breakfast.

There is no direct verb like 'shinwasei-suru.' You must use it as a noun: 'shinwasei ga aru' or 'shinwasei o takameru.'

That is 'electron affinity' in chemistry, describing the energy change when an electron is added to a neutral atom.

No, it can be used for abstract concepts like 'democracy and capitalism' or 'a brand and its target audience.'

You could say: '私のスキルは、貴社のプロジェクトと親和性が高いと考えています' (I believe my skills have a high affinity with your company's projects).

No. 'Shinwa' (myth) is written as 神話 (God + Story). 'Shinwa' (affinity) is written as 親和 (Intimacy + Harmony). They sound the same but have different kanji.

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