複利

1. Origins, structure, and basic meaning

• Structure: Spelling: 複利. Reading: ふくり. Core meaning: compound interest.
• Basic usage: Representative examples: 複利では利息にも再び利息がつく / 積立額を決めるため、複利の計算例を確認した.

2. Common pitfalls and similar expressions

• Compound and simple interest
  • 複利 calculates new interest on both the principal and previously accrued interest. Distinguish it from 単利, simple interest calculated only on the principal.