天災

1. Origins, structure, and basic meaning

• Structure: The written form is 天災, read てんさい. Elements for nature and disaster combine to denote a natural disaster rather than a human-caused event.
• Basic usage: 天災を教訓にする treats past disasters as lessons, while 天災による被害 identifies damage caused by natural disasters.

2. Common pitfalls and similar expressions

• Lessons from past disasters
  • Evacuation routes are improved using lessons learned from past natural disasters. Example: 過去の天災を教訓に、避難路が整備されました。 — Evacuation routes were improved based on lessons from past natural disasters.
• Training to reduce damage
  • The community drill is intended to reduce damage caused by natural disasters. Example: 天災による被害を減らすため、地域で訓練を行いました。 — The community held a drill to reduce damage from natural disasters.