紙幣

1. Origins, structure, and basic meaning

• Structure: 紙幣 is read as しへい and can mean “banknote” or “paper money”, depending on context.
• Basic usage: The examples show counting banknotes in a wallet and displaying old notes in a museum.

2. Common pitfalls and similar expressions

• Distinguishing senses and uses
  • It means paper currency and contrasts with metal 硬貨; individual notes are commonly counted with 枚.