革

1. Origins, structure, and basic meaning

• Structure: 革, read かわ, is a single noun written for animal hide processed into leather.
• Basic usage: It denotes processed animal hide used as a material, as in 革でかばんを作る.

2. Common pitfalls and similar expressions

• Scope and context
  • Unlike 皮, which broadly covers skin or hide, 革 is normally used for leather as a processed product material.