benefit

1. Origins, structure, and basic meaning

• Structure: 益 has 10 strokes and concerns benefit or usefulness.
• Basic usage: 利益 is read りえき, and 有益 is read ゆうえき.

2. Common pitfalls and similar expressions

• A benefit and being beneficial
  • 店の利益 means a shop's profits.
  • 自分の利益 means one's own benefit or interests.
  • 有益な内容 means useful content. 有益 takes な when modifying a noun.