摩耗

1. Origins, structure, and basic meaning

• Structure: It is read まもう. 摩 contributes friction and 耗 depletion, forming a word for material wearing away through rubbing.
• Basic usage: It describes worn shoe soles or wear on parts after use.
  • 長く使った靴底は摩耗し、雨の日に滑りやすくなっていた。

2. Common pitfalls and similar expressions

• Wear from friction versus broader depletion
  • 摩耗 focuses on wear caused by friction, while 消耗 extends more broadly to the depletion of stamina or resources.