参加

1. Origins, structure, and basic meaning

• Structure: 参加, read さんか, means joining a gathering or activity.
• Basic usage: It is used for plans to join a book club or applications to take part.
  • 来月の読書会に参加するつもりだ。

2. Common pitfalls and similar expressions

• Focus compared with 出席
  • 出席 focuses on being present at a gathering, while 参加 focuses on joining the gathering or activity.