危急

1. Origins, structure, and basic meaning

• Structure: 危急, read ききゅう, means an urgent state of danger.
• Basic usage: It appears in emergency instructions and descriptions of a nation in crisis.

2. Common pitfalls and similar expressions

• A time of danger
  • In the example, 危急の際 means at a time of urgent danger.
  • の links it to the following noun.
• Urgency and danger
  • Where 緊急 focuses on the need for prompt action, 危急 emphasizes urgency caused by danger.