昏睡

1. Origins, structure, and basic meaning

• Structure: 昏睡 is read as こんすい and is a noun for a coma, a deep state of unconsciousness without normal response to external stimuli.
• Basic usage: Describing entry into a coma appears in 昏睡状態に陥る, while describing awakening from a coma appears in 昏睡から目覚める.

2. Common pitfalls and similar expressions

• Difference from 睡眠
  • 昏睡 is a deep medical state of unconsciousness rather than ordinary sleep.