To cooperate with others as partners to achieve a common objective.
Word in 30 Seconds
- To work together toward a shared goal.
- Often used in formal or professional settings.
- Implies shared responsibility and equal participation.
一般的な文脈
ビジネスの現場では、他社との提携やプロジェクトの遂行において多用されます。また、学術的な研究や、地域社会でのボランティア活動、政治的な協力関係など、フォーマルからセミフォーマルな場面で広く使われます。
類語との比較
「協力する」は最も一般的で、助け合うという広い意味を持ちます。「共同する」は、より「同じ目標に向かって一緒に（共同で）何かを作り上げる」という具体的な成果物やプロセスに重点が置かれる傾向があります。「連携する」は、組織やシステム同士が情報を交換し、うまく噛み合うように動くというニュアンスが強く、より戦略的な協力関係を指します。
Examples
私たちは共同してプロジェクトを進めた。
everydayWe worked together to advance the project.
両国は環境問題の解決に向けて共同する。
formalBoth countries will cooperate to solve environmental issues.
彼らは共同で家賃を払っている。
informalThey pay the rent together.
この論文は二人の教授が共同して執筆した。
academicThis paper was co-authored by two professors.
Common Collocations
Common Phrases
共同して行う
To carry out jointly
共同の目的
Shared goal
共同で取り組む
To work on together
Often Confused With
Cooperate. Focuses on providing help or support, whereas 'kyodo' focuses on shared action.
Coordinate/Collaborate. Focuses on connecting systems or information flows between organizations.
Grammar Patterns
How to Use It
Usage Notes
Use 'kyodo suru' when you mean working as partners. It is more formal than 'issho ni yaru'. It is commonly used in business, legal, or academic contexts.
Common Mistakes
Don't use it for simple tasks like 'I helped my friend move'. 'Kyodo' implies a more formal partnership or structured task. Ensure the subject is plural or a group.
Tips
Focus on shared goals
Use this word when you want to emphasize that multiple parties are working as a single unit or team toward one specific goal.
Avoid in very casual talk
While correct, it sounds a bit stiff in casual conversation. Use 'issho ni' for daily life.
Emphasis on harmony
In Japanese culture, the concept of 'kyodo' reflects the importance of group harmony and shared responsibility in social tasks.
Word Origin
Derived from the kanji '共' (together) and '同' (same). It literally means 'to do something as one'.
Cultural Context
The word reflects the Japanese emphasis on group cohesion. It is often used in news to describe international or inter-company cooperation.
Memory Tip
Think of 'Kyodo' as 'Co-do' (Co-doing). When you co-do something, you are working together.
Frequently Asked Questions
4 questions「協力する」は助け合うという広い意味ですが、「共同する」は対等な立場で同じ目標に向かって作業を行うというニュアンスが強くなります。
日常会話でも使えますが、少し硬い響きがあるため、ビジネスや公的な場の方が適しています。友達同士なら「一緒にやる」と言う方が自然です。
「共同作業」「共同生活」「共同研究」「共同所有」などがあります。これらはすべて「複数の人で分かち合う」という意味が含まれています。
どちらもほぼ同じ意味で使われます。「共同して」は動詞を修飾し、「共同で」は副詞的に「共同という状態で」という意味で使われます。
Test Yourself
二社は新技術の開発のために___した。
動詞を修飾するため、助詞「して」が必要です。
Score: /1
Summary
To cooperate with others as partners to achieve a common objective.
- To work together toward a shared goal.
- Often used in formal or professional settings.
- Implies shared responsibility and equal participation.
Focus on shared goals
Use this word when you want to emphasize that multiple parties are working as a single unit or team toward one specific goal.
Avoid in very casual talk
While correct, it sounds a bit stiff in casual conversation. Use 'issho ni' for daily life.
Emphasis on harmony
In Japanese culture, the concept of 'kyodo' reflects the importance of group harmony and shared responsibility in social tasks.
Examples
4 of 4私たちは共同してプロジェクトを進めた。
We worked together to advance the project.
両国は環境問題の解決に向けて共同する。
Both countries will cooperate to solve environmental issues.
彼らは共同で家賃を払っている。
They pay the rent together.
この論文は二人の教授が共同して執筆した。
This paper was co-authored by two professors.
Related Content
More work words
調整
A1The act of making small changes to something to achieve a desired fit, function, or balance. In a work context, it specifically refers to coordinating schedules or aligning different opinions to reach an agreement.
有利な
B1Advantageous or favorable.
承知する
B1To acknowledge, agree; to be aware of and consent to something.
年収
B1Annual income; yearly salary.
応募
B1To apply for a position, a competition, a prize, or a public offer. It indicates a proactive step to participate in something.
応募する
B1To apply for a job or position.
～と同時に
B1At the same time as, simultaneously with.
勤怠
B1Attendance record; presence or absence from work.
係員
A2Person in charge; attendant.
ぎんこういん
A2Bank employee.
