黄金

1. Origins, structure, and basic meaning

• Structure: 黄金 is read as おうごん and is a noun for gold, a golden color, or something regarded as especially precious.
• Basic usage: Golden appearance appears in 黄金に輝く, while an object made of gold appears in 黄金の杯.

2. Common pitfalls and similar expressions

• Material and color
  • It can denote actual gold or the golden appearance of something such as a field in sunlight.
• Difference from 金
  • 金 broadly and ordinarily refers to gold or money, whereas 黄金 emphasizes gleaming color and precious value.