挙手

1. Origins, structure, and basic meaning

• Structure: 挙手 (reading きょしゅ) is a noun and suru-verb for raising a hand as a deliberate signal of support, a vote, or a wish to speak.
• Basic usage: It is used when supporters raise their hands or when a decision is made by a show of hands.

2. Common pitfalls and similar expressions

• Deliberate signal
  • 挙手する is a communicative response to a question or vote, not any incidental upward movement of a hand.
• Voting expressions
  • 挙手で決める and 挙手による採決 identify a show of hands as the method used to count opinions.