金貨

1. Origins, structure, and basic meaning

• Structure: 金貨 is read as きんか and is a noun for a coin made of gold or treated as a gold coin in a historical or narrative setting.
• Basic usage: A museum piece appears in 古代の金貨, while one coin is counted in 一枚の金貨.

2. Common pitfalls and similar expressions

• Material and monetary form
  • It refers not merely to gold as a material but to a coin used as money or preserved as an artifact.
• Difference from 硬貨
  • 硬貨 broadly means a coin regardless of material, whereas 金貨 specifically identifies a gold coin.