王国

1. Origins, structure, and basic meaning

• Structure: 王国 is read おうこく and refers to a country with a king or queen as its monarch.
• Basic usage: It can describe the setting of a story or the prosperity of a historical state.

2. Common pitfalls and similar expressions

• Country and royal family
  • 王室 refers to the royal household centered on the king or queen and family, while 王国 refers to the country with that monarch.
• More specific than 国
  • 国 broadly means a country, whereas 王国 identifies a country with a king or queen as its monarch.