曇り

1. Origins, structure, and basic meaning

• Structure: 曇り(くもり) means cloudy weather or a surface becoming misted or fogged.
• Basic usage: It describes an overcast forecast or fogging on glasses.

2. Common pitfalls and similar expressions

• Clouds and cloudiness
  • 雲 means clouds themselves; 曇り describes a cloudy or misted state.
  • 眼鏡の曇り concerns fogging on the lenses rather than the weather.