暗闇

1. Origins, structure, and basic meaning

• Structure: 暗闇 (くらやみ) denotes darkness as a condition or dark space. 暗闇に包まれる presents a resulting state; 暗闇を進む marks an area traversed.
• Basic usage: A room becomes enveloped in darkness after a blackout, while people move through a dark area by relying on a distant light.

2. Common pitfalls and similar expressions

• Darkness enveloping a space and darkness traversed
  • With に包まれた, darkness is the state surrounding the room. In を進んだ, を marks a route through which movement occurs, not an ordinary affected object.