開会

1. Origins, structure, and basic meaning

• Structure: 開会（かいかい） means the opening of a meeting, event, or tournament.
• Basic usage: Use it for a host's opening declaration or information about a tournament's start time.

2. Common pitfalls and similar expressions

• Opening an event versus holding it
  • 開会 focuses on the point at which an event begins.
  • 開催 refers more broadly to arranging and holding an event.