震災

1. Origins, structure, and basic meaning

• Structure: 震災(しんさい) means a disaster caused by an earthquake.
• Basic usage: It is used when discussing earthquake damage and recovery or preparing for such disasters.

2. Common pitfalls and similar expressions

• An earthquake and its disaster
  • 地震(じしん) refers to the ground-shaking event, while 震災 focuses on the resulting disaster.
• What someone prepares for
  • In 震災に備えて, に marks what someone is preparing for.