防腐

1. Origins, structure, and basic meaning

• Structure: 防腐(ぼうふ) means preventing material from rotting or decaying.
• Basic usage: It is used for things such as timber or food that are preserved against decay.

2. Common pitfalls and similar expressions

• Process and agent
  • 防腐 is decay prevention; 防腐剤 is an agent used for that purpose. Adding 剤 identifies the substance.