How to say "cooperation" in Japanese

• 協力きょうりょくJLPT N3approx.Common
  noun, suru verb, intransitive verbThe most general word for cooperation: people or groups working together or helping each other toward a goal. Typical when asking for or thanking someone for their help or support.
  ご協力きょうりょくに感謝かんしゃします。↗

  I appreciate your cooperation.
• 連携れんけいCommon
  noun, suru verb, intransitive verbCooperation as coordination or linkage between organizations, groups, or systems working in step with one another; typical of inter-organizational collaboration and alignment.
• 共同きょうどうJLPT N3approx.Common
  noun (prefix), suru verb, intransitive verb, no-adjectiveCooperation in the sense of doing something jointly: an activity, project, or venture undertaken and shared by multiple parties, stressing its joint character rather than mutual assistance.
  私わたしたちはその店みせを共同きょうどうで経営けいえいしている。↗

  We run the store jointly.
• 提携ていけいJLPT N1approx.Common
  noun, suru verb, transitive verb, intransitive verbCooperation specifically as a business tie-up or partnership between companies or organizations, such as a formal alliance for joint business. Not the word for everyday helping or teamwork.
  うちの会社かいしゃはあの合弁ごうべん会社かいしゃと提携ていけいしている。↗

  We are affiliated with the new joint venture company.
• 協調きょうちょうJLPT N1approx.Common
  noun, suru verb, intransitive verbCooperation as harmony and conciliation: parties keeping relations smooth and avoiding conflict, as in labor–management or international relations. It stresses getting along rather than active joint effort.
  企業きぎょう経営けいえいで活躍かつやくするために必要ひつようとなるのが多おおくの仲間なかまと仕事しごとを遂行すいこうするための協調きょうちょう精神せいしんです。↗

  What you need to take part in business management is the team spirit to work with many colleagues.

Use 協力 for general helping or working together, 連携 for coordination between organizations, 共同 for joint undertakings, 提携 for business tie-ups, and 協調 for harmonious, conciliatory relations.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 協力きょうりょくcooperation
• 連携れんけいcooperation
• 共同きょうどうcooperation
• 提携ていけいcooperation
• 協調きょうちょうcooperation
• 協賛きょうさんsupport
• 助け合いたすけあいcooperation
• ご協力ごきょうりょくcooperation
• 互助ごじょmutual aid
• タイアップtie-in
• 協働きょうどうcooperation
• 協業きょうぎょうcooperation
• 共同性きょうどうせいcooperation
• 共助きょうじょmutual aid
• 一致いっちunion
• 共和きょうわcooperation
• 握手あくしゅreconciliation
• 連係プレーれんけいプレー(close) cooperation