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B1 noun #5,500 most common 10 min read

자재

jajae Top 5,500

Practice it Examples Notes & Tips 자재 in 30 Seconds

Explanation 자재 in your Level:

At the A1 level, you don't need to use '자재' very often. It is a more advanced word than '물건' (thing) or '재료' (material/ingredient). However, you might see it on signs if you walk past a building site in Korea. Think of it simply as 'heavy stuff for building.' When you see a truck carrying wood or bricks, those are '자재.' For now, just remember that it is related to building and factories. You can mostly use '재료' for your everyday needs like cooking or crafts, but if you want to say 'building materials,' you can try using '건축 자재.' It is pronounced 'ja-jae.' Don't confuse it with '자제,' which sounds almost the same but means something totally different! Just focus on seeing it as a word for 'supplies' in a professional way.

As an A2 learner, you should begin to recognize '자재' in more specific contexts. You will hear it when people talk about their jobs, especially if they work in offices or on sites. It means 'materials' or 'supplies' for a project. You might hear someone say '자재가 왔어요' (The materials are here). This usually refers to things like wood, metal, or parts for a machine. At this level, you can start to distinguish it from '재료' (ingredients). Use '재료' for food and '자재' for construction. You might also see '원자재' (raw materials) on the news when they talk about why things are getting more expensive. Try to remember the phrase '자재 관리' (managing materials), as it's a common job task in Korea.

At the B1 level, you should be able to use '자재' comfortably in professional or semi-formal situations. You understand that it refers to industrial or construction materials. You should be able to use collocations like '자재를 확보하다' (to secure materials) or '자재가 부족하다' (to be short on materials). This is the level where you must distinguish between '자재,' '재료,' and '소재.' You know that '자재' is for physical stock in a factory or site, while '소재' might be used for the fabric of your clothes or the topic of a movie. You can also understand news reports about '자재 가격 상승' (rising material prices) and how they affect the economy. This word is essential if you plan to work in any technical or business field in Korea.

For B2 learners, '자재' is a standard part of your professional vocabulary. You should be familiar with its nuances in supply chain management and logistics. You can discuss '자재 수급' (supply and demand of materials) and understand the implications of '부실 자재' (substandard materials) in safety reports. You likely know related terms like '원자재' (raw materials) and '기자재' (equipment and materials). At this level, you can use the word in complex sentences, such as '자재 수급의 불균형으로 인해 공사 기간이 연장되었습니다' (The construction period was extended due to an imbalance in material supply). You are also aware of the Hanja roots (資材), which helps you differentiate it from homophones like '자제' (self-restraint).

At the C1 level, you have a nuanced grasp of '자재' and its role in various industries. You can use it in academic or high-level business discussions regarding '자재 조달 전략' (material procurement strategies) or '친환경 건축 자재의 시장성' (the marketability of eco-friendly building materials). You understand how '자재' fits into broader economic concepts like '원자재 펀드' (raw material funds) or '글로벌 자재 공급망' (global material supply chains). You can easily switch between '자재,' '원료,' '소재,' and '성분' depending on the precise technical context. You also recognize the word in literature or high-level journalism where it might be used metaphorically, though its primary use remains technical and industrial.

At the C2 level, you use '자재' with the precision of a native professional. You are aware of the subtle legal and regulatory nuances associated with '자재 검수' (material inspection) and '품질 관리' (quality control) standards in Korea. You can engage in deep debates about the impact of international trade policies on '핵심 전략 자재' (core strategic materials). You have a perfect command of the word's various compound forms and can identify even the slightest misuse of the term in formal documents. Your understanding extends to the historical evolution of material management in Korean industry and how '자재' reflects the country's economic development from heavy industry to high-tech manufacturing.

Practice it Examples Notes & Tips

자재 in 30 Seconds

자재 means industrial or construction materials, such as bricks, steel, or factory parts.
It is more formal than '재료' and is used in business, logistics, and news.
Common phrases include '자재 수급' (material supply) and '건축 자재' (building materials).
Do not confuse it with '자제' (self-restraint) or '재료' (cooking ingredients).

The Korean word 자재 (Jajae) is a fundamental noun that refers to the essential materials, supplies, or components required to manufacture goods, construct buildings, or complete a specific project. Derived from the Hanja characters 資 (ja - resources/capital) and 材 (jae - material/timber), it carries a sense of substance that is foundational to production. Unlike simple ingredients used in cooking, '자재' implies a more industrial, professional, or large-scale context, such as construction sites, manufacturing plants, or large-scale engineering projects.

Industrial Context: In a factory or construction setting, '자재' includes everything from steel beams and cement to specialized electronic components. It is the physical stuff that gets transformed into a final product.
Logistics and Supply Chain: When talking about the 'supply' of materials, you will often hear terms like '자재 수급' (supply and demand of materials). This is crucial in business discussions regarding delays or cost increases.

공사 현장에 건축 자재가 도착했습니다. (The construction materials have arrived at the site.)

When you hear this word, think of 'tangible resources.' If you are building a house, the wood, bricks, and pipes are your '자재.' If you are working in a smartphone factory, the screens and chips are the '자재.' It is a word that emphasizes the physical inventory needed to start work. It is rarely used for abstract things like 'material for a story' or 'educational material,' which use different words like '소재' or '교재.'

최근 원자재 가격이 급등하여 걱정입니다. (I am worried because raw material prices have recently skyrocketed.)

In modern Korean society, '자재' is also heavily associated with the economy. News reports frequently discuss '원자재' (raw materials) prices, such as oil, iron ore, or grain, as these impact the overall cost of living. Understanding this word helps you navigate professional environments and news broadcasts effectively. It is a professional-sounding word that elevates your vocabulary from basic 'stuff' (물건) to specific 'materials' (자재).

Management: Companies have '자재과' (Material Department) or '자재 관리' (Material Management) to ensure nothing is wasted and everything is tracked.

친환경 자재를 사용하여 집을 지었습니다. (The house was built using eco-friendly materials.)

Finally, '자재' carries a weight of responsibility. In construction, '부실 자재' (substandard materials) is a serious term that implies safety risks and corruption. Using the right '자재' is seen as a mark of quality and integrity in Korean business culture. Whether it is '건축 자재' (building materials) or '핵심 자재' (core materials), the word is central to the physical creation of our world.

Using '자재' correctly requires understanding its role as a noun that often functions as the object of logistical or constructive actions. It is frequently paired with verbs like '확보하다' (to secure), '관리하다' (to manage), '부족하다' (to be insufficient), and '구매하다' (to purchase). Because it is a formal and technical term, it appears most often in written reports, news, and professional conversations.

Securing Materials: When a project starts, the first step is often '자재 확보' (securing materials). Sentence: '우리는 공사를 시작하기 전에 충분한 자재를 확보해야 합니다.' (We must secure enough materials before starting construction.)

반도체 생산을 위한 자재 수급이 원활하지 않습니다. (The supply of materials for semiconductor production is not smooth.)

In the sentence above, '자재 수급' is a high-level compound noun phrase. '수급' refers to the balance of supply (수급) and demand (공급). This is a very common way to describe industrial shortages. If you are a project manager, you might say, '자재가 모자라서 작업을 중단했습니다' (Work stopped because materials were insufficient).

이 건물은 최고급 자재만을 사용하여 지어졌습니다. (This building was built using only the highest quality materials.)

Another common usage is '자재 관리' (material management). This refers to the inventory control of a warehouse or site. You might hear, '자재 관리를 철저히 하세요' (Please manage the materials thoroughly). This implies counting, storing, and protecting the items from damage or theft.

Environmental Usage: Modern construction often focuses on '친환경 자재' (eco-friendly materials). Sentence: '정부는 친환경 자재 사용을 권장하고 있습니다.' (The government is encouraging the use of eco-friendly materials.)

수입 자재의 가격이 올라서 공사비가 증가했습니다. (The price of imported materials rose, so construction costs increased.)

Lastly, consider the word in passive contexts. '자재가 낭비되다' (materials are being wasted). This is a common complaint in efficiency-focused Korean workplaces. By mastering these patterns, you can discuss logistics, quality, and costs with precision.

If you live or work in Korea, you will encounter '자재' in several specific environments. It is not a word usually heard at a casual dinner party, but it is ubiquitous in professional and civic life. The most common place is, of course, a construction site (공사 현장). You will see trucks labeled '자재 운반' (material transport) and signs indicating areas for '자재 적치장' (material storage yard).

The Evening News: Economic news segments frequently use '원자재 가격' (raw material prices) to explain why the price of ramen or gasoline is going up. Words like '국제 원자재 시장' (international raw material market) are standard vocabulary for news anchors.

뉴스: "세계적인 공급망 혼란으로 인해 건축 자재 수급에 비상이 걸렸습니다." (News: "Due to global supply chain disruptions, there is an emergency in the supply of construction materials.")

Inside a large corporation, especially in departments like Procurement (구매부) or Production (생산부), '자재' is spoken dozens of times a day. Managers will ask for '자재 명세서' (bill of materials or material specification sheet). This document lists every single component needed for a product. If a worker says, '자재가 아직 입고되지 않았습니다,' they are telling their boss that the materials haven't been delivered to the warehouse yet.

사무실: "이번 프로젝트에 들어갈 자재 리스트를 확인해 주세요." (Office: "Please check the material list for this project.")

You might also hear it in the context of interior design or home renovation. If you visit an '인테리어 자재 백화점' (interior material department store), you are looking at floorings, wallpapers, and tiles. Here, the word feels a bit more accessible to the general public. Koreans who are DIY-savvy will talk about '자재를 직접 고르다' (choosing materials personally) to save money or ensure quality.

Industrial Safety Training: Safety videos often warn against '자재 낙하' (falling materials), a major cause of site accidents. This reinforces the physical, heavy nature of what '자재' usually represents.

현장 안내: "자재를 옮길 때는 반드시 안전모를 착용하십시오." (Site Notice: "Always wear a helmet when moving materials.")

In summary, '자재' is a word of industry, economy, and physical creation. Whether it's the steel for a skyscraper or the fabric for a clothing line, '자재' is the term that bridges the gap between a design and a finished product.

The most frequent mistakes with '자재' involve confusing it with other words that also translate to 'material' in English. Because English uses 'material' for everything from fabric to data to ingredients, Korean learners often struggle to differentiate between 자재, 재료, 원료, and 소재.

자재 vs. 재료 (Jajae vs. Jaeryo): '재료' is the most general term. It is used for cooking ingredients (요리 재료) or materials for a hobby. '자재' is strictly for construction or industrial production. You would never say '김밥 자재' (wrong); you say '김밥 재료' (correct).

Mistake: 비빔밥을 만들 자재를 샀어요. (X)
Correction: 비빔밥을 만들 재료를 샀어요. (O)

Another common mix-up is with 원료 (Wonryo). '원료' refers to raw, unprocessed substances that undergo a chemical or physical change to become something else, like crude oil becoming plastic. '자재' usually refers to parts or components that are used as they are, like a window being installed in a wall. While iron ore is a '원료', the steel beams made from it and delivered to a site are '자재'.

Mistake: 이 소설의 자재는 실화입니다. (X)
Correction: 이 소설의 소재는 실화입니다. (O)

Learners also confuse '자재' with 소재 (Sojae). '소재' is used for the 'subject matter' of a story, movie, or research. It is also used for 'material' in a more scientific or abstract sense (e.g., '신소재' - new materials/advanced materials). Using '자재' for a movie plot is a significant error that sounds very strange to native speakers.

자재 vs. 자제 (Jajae vs. Jaje): Be careful with the spelling! '자제' (with an 'e' sound) means 'self-restraint' or 'refraining from.' Confusing these two can lead to hilarious or confusing sentences like 'Please materials from smoking' instead of 'Please refrain from smoking.'

Mistake: 과도한 음주를 자재하세요. (X)
Correction: 과도한 음주를 자제하세요. (O)

To avoid these mistakes, always ask yourself: 'Am I talking about a construction site or a factory inventory?' If yes, '자재' is your best bet. If you are talking about cooking, writing, or self-control, look for another word.

To truly master '자재,' you need to see where it fits in the family of Korean words for 'materials.' Each word has a specific 'territory' where it is the natural choice. Using the wrong one won't always make you misunderstood, but it will make you sound less like a native speaker.

재료 (Jaeryo) - The All-Rounder: This is the most common word for 'ingredients' or 'supplies.' If you are making a craft or cooking a meal, use '재료.' It focuses on the components needed to make a specific thing.
원료 (Wonryo) - The Raw Source: Focuses on the 'origin.' These are raw materials that usually lose their original form during processing. Think of crude oil, coal, or raw cotton.
소재 (Sojae) - The Essence/Subject: Used for the 'stuff' something is made of (like the fabric of a shirt) or the 'subject matter' of creative work. It's more about the quality or the topic than the physical inventory.

Comparison:
- 건축 자재 (Building materials - inventory focused)
- 요리 재료 (Cooking ingredients - component focused)
- 화학 원료 (Chemical raw materials - source focused)

There are also more specific terms used in business. 부품 (Bupum) refers to 'parts' or 'components.' While '자재' might include raw steel, '부품' refers to things like bolts, gears, or microchips that are already manufactured parts of a larger machine. If you are fixing a car, you need '부품,' not '자재.'

For those interested in high-tech industries, 장비 (Jangbi) is often paired with '자재.' While '자재' is what you use up (consumables/materials), '장비' is the 'equipment' or 'machinery' you use to do the work. A crane is '장비,' while the cement it lifts is '자재.'

기업은 자재와 장비를 효율적으로 관리해야 합니다. (A company must efficiently manage materials and equipment.)

Finally, we have 소모품 (Somopum), which means 'consumables.' These are small items used up quickly, like printer paper or drill bits. While technically '자재' in a broad sense, '소모품' is the better word for office supplies or small recurring needs. Choosing between these words shows your level of Korean proficiency and understanding of professional nuances.

How Formal Is It?

Fun Fact

The 'jae' (材) in 'jajae' is the same 'jae' used in 'injae' (talent/talented person), implying that people can be seen as the 'materials' for a nation's success.

Pronunciation Guide

UK /dʒɑː.dʒeɪ/

US /dʒɑ.dʒeɪ/

Even stress on both syllables: JA-JAE.

Rhymes With

과제 (gwaje - task) 화제 (hwaje - topic) 결제 (gyeolje - payment) 경제 (gyeongje - economy) 축제 (chukje - festival) 문제 (munje - problem) 단체 (danche - group) 실제 (silje - reality)

Common Errors

Pronouncing 'ae' as 'ay' (like 'jay-jay'). It should be flatter.
Confusing it with '자제' (jaje) which has a slightly different vowel sound.
Making the 'j' sound too sharp like a 'z'.
Stressing the second syllable too much.
Pronouncing the 'j' as a 'ch' sound.

Difficulty Rating

Reading 3/5

Common in news and signs, but requires Hanja knowledge for deep understanding.

Writing 4/5

Must be careful not to confuse with '자제' or '재료'.

Speaking 3/5

Pronunciation is straightforward but usage is context-specific.

Listening 3/5

Easily recognizable in industrial contexts.

What to Learn Next

Prerequisites

물건 (thing) 재료 (material/ingredient) 만들다 (to make) 집 (house)

Learn Next

원료 (raw material) 소재 (material/subject) 수급 (supply and demand) 공정 (process)

Advanced

조달 (procurement) 재고 관리 (inventory management) 물류 (logistics)

Grammar to Know

Noun + 로 인해 (Due to...)

자재 부족으로 인해 공사가 늦어졌습니다.

Noun + 을/를 통해 (Through...)

자재 관리를 통해 비용을 줄였습니다.

Noun + 에 대한 (About/Regarding...)

자재에 대한 조사를 시작했습니다.

Modifier -(으)ㄴ/는 (Noun modifying noun)

남은 자재를 버리지 마세요.

Verb + 기 위해 (In order to...)

자재를 확보하기 위해 노력하고 있습니다.

Examples by Level

자재가 왔어요.

The materials have arrived.

Simple subject + verb.

이것은 건축 자재입니다.

These are construction materials.

Noun + 이다 (to be).

자재가 많아요.

There are many materials.

Adjective usage.

자재를 사요.

I buy materials.

Object marker '를'.

자재가 어디에 있어요?

Where are the materials?

Location particle '에'.

자재를 옮겨요.

I am moving the materials.

Present tense verb.

이 자재는 나무예요.

This material is wood.

Demonstrative '이'.

자재가 필요해요.

I need materials.

Adjective '필요하다'.

공장에 자재가 부족해요.

Materials are lacking in the factory.

Location '에' + '부족하다'.

자재를 창고에 넣으세요.

Please put the materials in the warehouse.

Imperative '-(으)세요'.

자재 가격이 올랐어요.

The price of materials has risen.

Past tense verb.

새로운 자재를 주문했어요.

I ordered new materials.

Adjective '새로운' modifying noun.

자재를 확인해 보세요.

Please try checking the materials.

Auxiliary verb '-아/어 보다'.

좋은 자재를 사용해야 해요.

You must use good materials.

Obligation '-해야 하다'.

자재가 늦게 도착할 거예요.

The materials will arrive late.

Future tense '-(으)ㄹ 거예요'.

어떤 자재가 필요하세요?

What kind of materials do you need?

Honorific '-(으)세요'.

자재 수급이 원활하지 않아 공사가 중단되었습니다.

Construction was halted because the material supply was not smooth.

Causal connective '-아/어서'.

우리는 친환경 자재를 사용하여 집을 짓기로 했습니다.

We decided to build the house using eco-friendly materials.

Decision making '-기로 하다'.

자재 명세서를 꼼꼼히 검토해 주세요.

Please review the material specification sheet thoroughly.

Adverb '꼼꼼히' (thoroughly).

수입 자재의 비중이 너무 높습니다.

The proportion of imported materials is too high.

Noun '비중' (proportion/weight).

자재를 아껴서 사용해야 비용을 절감할 수 있습니다.

We must use materials sparingly to reduce costs.

Ability '-(으)ㄹ 수 있다'.

현장에 남은 자재를 정리해 주세요.

Please organize the remaining materials at the site.

Modifier '남은' (remaining).

자재 관리 시스템을 새로 도입했습니다.

We have introduced a new material management system.

Introduction of a system '도입하다'.

이 자재는 습기에 약하므로 주의해야 합니다.

This material is weak against moisture, so you must be careful.

Reasoning connective '-(으)므로'.

원자재 가격의 변동이 제품 가격에 직접적인 영향을 미칩니다.

Fluctuations in raw material prices directly affect product prices.

Influence '영향을 미치다'.

품질이 낮은 자재를 사용하면 건물의 안전이 위협받을 수 있습니다.

Using low-quality materials can threaten the safety of the building.

Conditional '-면' and passive '위협받다'.

자재 창고의 재고 현황을 실시간으로 파악하고 있습니다.

We are tracking the inventory status of the material warehouse in real-time.

Progressive '-고 있다'.

핵심 자재의 국산화를 위해 연구를 진행 중입니다.

Research is underway to localize core materials.

State of action '-중이다'.

자재 조달 과정에서 예상치 못한 문제가 발생했습니다.

An unexpected problem occurred during the material procurement process.

Modifier '예상치 못한' (unexpected).

고급 자재를 사용했음에도 불구하고 분양가가 저렴합니다.

Despite using high-end materials, the sale price is cheap.

Contrastive '-음에도 불구하고'.

자재의 특성을 잘 파악하여 적재적소에 배치해야 합니다.

You must understand the characteristics of the materials and place them in the right spots.

Idiom '적재적소' (right person in the right place/right thing in the right place).

불량 자재를 납품한 업체에 대해 강력히 대응할 방침입니다.

We plan to respond strongly to the company that delivered defective materials.

Plan/Policy '-(으)ㄹ 방침이다'.

글로벌 공급망 위기로 인해 자재 수급의 불확실성이 증대되고 있습니다.

Uncertainty in material supply is increasing due to the global supply chain crisis.

Noun '불확실성' (uncertainty) + '증대되다' (to increase).

건축 자재의 재활용 비율을 높여 탄소 배출을 줄여야 합니다.

We must reduce carbon emissions by increasing the recycling rate of construction materials.

Purpose '-기 위해' (implied) or '-여' (connective).

자재의 내구성과 심미성을 동시에 고려한 설계가 필요합니다.

A design that considers both the durability and aesthetics of materials is necessary.

Simultaneous action/consideration '동시에'.

원자재 펀드에 투자하여 인플레이션에 대비하는 전략을 세웠습니다.

I set a strategy to prepare for inflation by investing in raw material funds.

Preparation '대비하다'.

자재 관리의 효율성을 극대화하기 위해 AI 기술을 도입했습니다.

AI technology was introduced to maximize the efficiency of material management.

Maximization '극대화하다'.

특수 자재의 경우 수출입 규제가 엄격하여 절차가 복잡합니다.

In the case of special materials, the procedures are complex due to strict import/export regulations.

Conditional '의 경우'.

자재의 품질 증명서를 확인하는 것은 공사의 기본 원칙입니다.

Checking the quality certificate of materials is a basic principle of construction.

Gerund '-하는 것'.

수입 자재 의존도를 낮추기 위해 대체 자재 개발이 시급합니다.

Development of alternative materials is urgent to reduce dependence on imported materials.

Urgency '시급하다'.

자재 수급의 불안정성은 건설 산업 전반에 걸쳐 막대한 경제적 손실을 초래할 수 있습니다.

Instability in material supply can cause enormous economic losses across the entire construction industry.

Causation '초래하다' (to bring about/cause).

지속 가능한 발전을 위해 자재의 생산부터 폐기까지 전 과정을 관리해야 합니다.

For sustainable development, the entire process from production to disposal of materials must be managed.

Range '부터...까지'.

첨단 소재 기술의 발전은 기존 자재의 한계를 뛰어넘는 혁신을 가능케 합니다.

The development of advanced material technology enables innovations that exceed the limits of existing materials.

Causative form '-게/케 하다'.

자재의 물성 분석을 통해 최적의 시공 방법을 도출해내야 합니다.

The optimal construction method must be derived through an analysis of the physical properties of the materials.

Derivation '도출해내다'.

전략 자재의 비축은 국가 안보와 직결되는 중대한 사안입니다.

The stockpiling of strategic materials is a serious matter directly linked to national security.

Direct link '직결되다'.

자재 납품 계약 시 품질 보증 및 지체 상금에 관한 조항을 명확히 해야 합니다.

When contracting for material delivery, clauses regarding quality assurance and liquidated damages must be clarified.

Clarification '명확히 하다'.

건축 자재의 표준화는 공기 단축과 원가 절감을 위한 핵심 과제입니다.

Standardization of construction materials is a key task for shortening construction periods and reducing costs.

Standardization '표준화'.

자재의 유통 구조를 투명하게 개선함으로써 불필요한 중간 비용을 제거했습니다.

By transparently improving the distribution structure of materials, unnecessary intermediate costs were eliminated.

Method '-함으로써'.

Synonyms

재료 원료 물자 소재 부품

Antonyms

Common Collocations

자재 수급

건축 자재

자재 관리

원자재 가격

자재 확보

자재 창고

자재 명세서

부실 자재

핵심 자재

자재 운반

Common Phrases

자재가 떨어지다

— To run out of materials.

자재가 떨어져서 일을 못 해요.

자재를 아끼다

— To save or use materials sparingly.

자재를 아껴서 사용합시다.

자재를 들여오다

— To bring in or import materials.

해외에서 자재를 들여왔습니다.

자재가 남다

— To have materials left over.

공사 후에 자재가 많이 남았어요.

자재를 쌓아두다

— To pile up or stack materials.

마당에 자재를 쌓아두지 마세요.

자재를 검수하다

— To inspect delivered materials.

도착한 자재를 꼼꼼히 검수하세요.

자재가 부족하다

— To be short on materials.

지금 자재가 턱없이 부족합니다.

자재비 상승

— Rising cost of materials.

자재비 상승으로 이익이 줄었습니다.

자재를 신청하다

— To request/apply for materials.

필요한 자재를 미리 신청하세요.

자재를 폐기하다

— To discard or scrap materials.

오래된 자재를 모두 폐기했습니다.

Often Confused With

자재 vs 자제 (Jaje)

Means self-restraint. '자재' is materials. One letter difference!

자재 vs 재제 (Jeje)

Means manufacturing or remaking, but is rarely used compared to '자재'.

자재 vs 제재 (Jeje)

Means sanctions or restrictions. Sounds similar but very different meaning.

Idioms & Expressions

"자재를 쏟아붓다"

— To pour all available materials into a project (often used for high investment).

이 건물에 최고의 자재를 쏟아부었습니다.

Metaphorical

"부실 자재로 지은 집"

— A house built with poor materials (idiom for something built on a shaky foundation).

그 계획은 부실 자재로 지은 집처럼 위험해요.

Metaphorical

"자재 값도 안 나오다"

— To not even cover the cost of materials (meaning a total loss).

이걸 팔아봤자 자재 값도 안 나와요.

Colloquial

"자재가 보배다"

— The materials are treasures (meaning quality materials are the most important thing).

목수에게는 좋은 자재가 보배입니다.

Proverbial style

"자재 싸움"

— A fight over materials (competition to secure limited resources).

지금 업계는 자재 싸움이 치열합니다.

Professional Slang

"자재가 반이다"

— Materials are half the work (meaning getting good materials is half the battle).

요리든 건축이든 자재가 반이에요.

Colloquial

"자재를 빼돌리다"

— To embezzle or steal materials secretly.

누군가 공사 현장에서 자재를 빼돌렸어요.

Criminal/Serious

"자재에 눈이 멀다"

— To be blinded by (the cost/quality of) materials.

자재에 눈이 멀어 안전을 무시하면 안 됩니다.

Warning

"자재를 쟁여두다"

— To hoard materials.

가격이 오를까 봐 자재를 쟁여두고 있어요.

Colloquial

"자재가 웬수다"

— Materials are the enemy (used when materials cause constant trouble).

수급이 안 되니 자재가 웬수네요.

Humorous/Frustrated

Easily Confused

자재 vs 재료

Both mean 'material'.

'재료' is for cooking/crafts; '자재' is for industry/construction.

김밥 재료 vs 건축 자재

자재 vs 소재

Both mean 'material'.

'소재' is the substance/essence or subject matter; '자재' is physical stock.

영화 소재 vs 공장 자재

자재 vs 원료

Both mean 'raw material'.

'원료' is for substances that change form (oil); '자재' is for components (bricks).

플라스틱 원료 vs 창문 자재

자재 vs 부품

Both are items used to make something.

'부품' are specific parts (screws); '자재' is a broader category including raw stock.

엔진 부품 vs 건설 자재

자재 vs 장비

Both found on work sites.

'장비' is the tool/machine; '자재' is the material consumed.

굴착기(장비) vs 시멘트(자재)

Sentence Patterns

자재가 [Adjective]-어요.

자재가 비싸요.

[Noun] 자재를 사용하다.

나무 자재를 사용해요.

자재가 부족해서 [Result].

자재가 부족해서 공사가 멈췄어요.

자재 수급에 [Problem]이 생기다.

자재 수급에 차질이 생겼습니다.

자재를 [Verb]-기 위해 [Action].

자재를 확보하기 위해 회의를 합니다.

자재의 [Property]을/를 고려하다.

자재의 내구성을 고려해야 합니다.

[Economic Factor]로 인해 자재비가 [Movement].

환율 상승으로 인해 자재비가 올랐습니다.

자재의 [Process] 전 과정을 [Action].

자재의 유통 전 과정을 감시합니다.

Word Family

Nouns

원자재 (raw materials)

기자재 (equipment and materials)

부자재 (subsidiary materials)

폐자재 (waste materials)

Verbs

자재하다 (to supply materials - rare)

자재 관리하다 (to manage materials)

Adjectives

자재가 풍부하다 (materials are abundant)

자재가 귀하다 (materials are scarce)

건설 (construction)

제조 (manufacturing)

수급 (supply and demand)

재고 (inventory)

공급 (supply)

How to Use It

frequency

High in professional and news contexts; Medium in daily life.

Common Mistakes

Using '자재' for cooking ingredients. → 재료
자재 is for industrial/construction use only.
Spelling it as '자제' when meaning materials. → 자재
자제 means self-restraint.
Using '자재' for a movie's subject matter. → 소재
소재 is for abstract material or subject matter.
Counting '자재' as '한 자재, 두 자재'. → 자재 한 종류, 자재 두 종류
It is a collective noun; count by types or units like '톤' (ton).
Confusing '자재' with '장비' (equipment). → 자재 (materials) vs 장비 (tools)
Materials are consumed; equipment is used and kept.

Tips

Think Construction

Whenever you see a construction crane, associate it with the word '자재'.

Object Marker

Since '자재' is usually something you move, buy, or manage, it often takes the object marker '-을/를'.

News Keywords

Listen for '자재' alongside '가격' (price) and '상승' (rise) in economic news.

Professionalism

Using '자재' instead of '이거' (this thing) in a workshop will earn you respect.

Hanja Roots

Remember 資 (resource) to help you remember it's about business/value.

Safety First

In Korea, checking '자재' quality is a major part of building safety regulations.

Rhyme Time

Rhyme it with 'gwaje' (task) to remember that managing materials is a big task.

Scale Matters

Use '자재' for big things, '재료' for small things.

Store Names

Look for '자재' on signs of hardware or lumber stores in Korea.

Consumables

If you use it up to build something, it's '자재'.

Memorize It

Mnemonic

Imagine a **JA**r of **JAE** (jewels/materials) needed to build a palace. 'JA-JAE' are the 'jewels' of construction.

Visual Association

Picture a massive construction site with a giant sign saying 'JA-JAE' over a pile of steel beams.

Word Web

Steel Wood Cement Factory Construction Inventory Supply Cost

Challenge

Go to a local hardware store and try to name 5 items that would be classified as '자재' in Korean.

Word Origin

From Middle Chinese 資 (zī - resources/wealth) and 材 (cái - material/timber).

Original meaning: Resources and timber needed for construction or production.

Sino-Korean (Hanja)

Cultural Context

Be careful when discussing 'substandard materials' (부실 자재) as it is a sensitive topic related to historical building collapses in Korea.

In English, we often use 'supplies' or 'materials' interchangeably. In Korean, '자재' is strictly professional/industrial.

News reports on the 'Urea water' (요소수) crisis in Korea often categorized it as a critical '자재'. The drama 'My Mister' (나의 아저씨) features structural engineers who deal with building materials. The phrase '부실 공사' (shoddy construction) often implicates '부실 자재'.

Practice in Real Life

Real-World Contexts

Construction Site

자재 어디에 둘까요?
자재가 부족합니다.
안전모 착용 필수.
자재 운반 중.

Factory Meeting

자재 수급 계획.
불량 자재 반품.
자재 명세서 확인.
원가 절감 방안.

Economic News

원자재 가격 급등.
공급망 차질.
수입 의존도.
물가 상승 요인.

Interior Design

고급 자재 사용.
친환경 자재.
자재 샘플.
자재비 견적.

DIY/Hardware Store

어떤 자재 찾으세요?
자재 배달 되나요?
목재 자재 코너.
튼튼한 자재.

Conversation Starters

"요즘 건축 자재 가격이 너무 올랐죠?"

"어떤 종류의 자재를 주로 사용하시나요?"

"자재 수급에 문제는 없나요?"

"친환경 자재에 대해 어떻게 생각하세요?"

"자재 관리를 어떻게 효율적으로 할 수 있을까요?"

Journal Prompts

오늘 내가 본 '자재'에는 어떤 것들이 있었는지 적어보세요.

내가 만약 집을 짓는다면 어떤 자재를 사용하고 싶은지 설명해 보세요.

자재 부족으로 인해 겪었던 어려움이 있다면 써보세요.

원자재 가격 상승이 우리 삶에 미치는 영향에 대해 써보세요.

한국의 건설 산업에서 자재 관리가 중요한 이유를 생각해보세요.

Frequently Asked Questions

10 questions

Usually, no. For office supplies, '사무용품' or '소모품' is better. '자재' implies larger scale production or building.

No, that would sound very strange. Use '재료' for food ingredients.

'원자재' specifically refers to 'raw' materials like oil or iron ore. '자재' is a more general term that includes those and processed components like pipes or bricks.

It is a collective noun, so it acts like 'furniture' or 'equipment' in English. You don't usually say 'one jajae'.

You can say '고급 자재' or '우수한 자재'.

It refers to materials that do not meet safety or quality standards, often used in the context of construction scandals.

Yes, for the physical components needed to make hardware, like semiconductors or screens.

It sounds like the 'e' in 'bed' or 'get'. It is a short, open vowel.

It is the 'Materials Department' or 'Procurement Department' in a company.

Not usually. For the fabric of clothes, use '소재' or '원단'.