国王

1. Origins, structure, and basic meaning

• Structure: 国王, read こくおう, combines country 国 with king 王 to name a national monarch.
• Basic usage: It denotes the office or person of a king ruling a country, as in 隣国の国王.

2. Common pitfalls and similar expressions

• Scope and context
  • While 王 can mean a king generally or a figurative champion, 国王 specifically denotes a national monarch.