君主

1. Origins, structure, and basic meaning

• Structure: 君主 (くんしゅ) is a person noun for a monarch or sovereign ruler.
• Basic usage: 君主は民の声を聞く presents an individual ruler; 君主と議会の関係 pairs monarchy's ruler with the legislature.

2. Common pitfalls and similar expressions

• Individual ruler and institutional relationship
  • The story context identifies one monarch, while the history context examines the ruler's relation to a legislature through と.