引率

1. Origins, structure, and basic meaning

• Structure: 引率 (いんそつ) is an action noun for a responsible adult leading a group to a destination and supervising safety.
• Basic usage: 教師が生徒を引率する has a teacher lead students to a museum, while 二人の引率者が同行する states the number of supervisors accompanying an excursion.

2. Common pitfalls and similar expressions

• Supervising action and supervisor role
  • 生徒を引率する is the action, whereas 引率者 is the person responsible for it. The term does not include every companion walking in the same direction.