党首

1. Origins, structure, and basic meaning

• Structure: 党首 is read とうしゅ and means the leader of a political party.
• Basic usage: Use it for a leader's statements or actions, or collectively as in 各党の党首.

2. Common pitfalls and similar expressions

• Party leader versus head of government
  • 党首 is a position within a party; 首相 is the position of prime minister. One person may hold both roles.