授業

1. Origins, structure, and basic meaning

• Structure: Written 授業 and read じゅぎょう, it denotes an organized class period in which a teacher conducts learning activities.
• Basic usage: It covers reading an old tale during class and distributing materials before the class begins.

2. Common pitfalls and similar expressions

• Class session rather than subject
  • It commonly points to the lesson or class meeting itself, not simply the academic subject.