cooperate

1. Origins, structure, and basic meaning

• Structure: 協 conveys joining forces or working together; its on-reading is きょう.
• Basic usage: 協力 means cooperation, while 協会 is an association formed around a shared purpose or field.

2. Common pitfalls and similar expressions

• Action and organization
  • 協力する describes working together. 協会 refers to an organization, such as a photography association that can hold events or receive inquiries.
• A long vowel
  • 協力 is read きょうりょく, and 協会 is read きょうかい. Keep the long vowel in the initial きょう of both words.