兼任

1. Origins, structure, and basic meaning

• Structure: 兼任, read けんにん, means holding two or more posts or roles at the same time.
• Basic usage: It is used when someone keeps one role while also taking another, such as teaching while directing a school club.

2. Common pitfalls and similar expressions

• Concurrent and dedicated roles
  • 兼任 focuses on holding roles together; 専任 focuses on being dedicated to a particular duty.
  • 二つの役職を兼任する means holding two posts during the same period, not occupying them one after the other.