開幕

1. Origins, structure, and basic meaning

• Structure: 開幕, read かいまく, denotes the opening or commencement of an event.
• Basic usage: 映画祭が開幕した predicates the festival's start; 大会の開幕を告げる makes the opening what music announces.

2. Common pitfalls and similar expressions

• The formal opening of an event
  • 開幕 is the official commencement of a festival, competition, performance, or similar event. A bell or announcement may signal that opening.