硝煙

1. Origins, structure, and basic meaning

• Structure: 硝煙 is read as しょうえん and is a noun for gun smoke or powder smoke produced when gunpowder burns or a firearm is discharged.
• Basic usage: Smoke covering a scene appears in 硝煙が画面を覆う, while a painted subject appears in 硝煙を描いた絵.

2. Common pitfalls and similar expressions

• Source of the smoke
  • It denotes smoke associated with gunpowder, not smoke or vapor from any source.
• Difference from 煙
  • 煙 is smoke generally, while 硝煙 is specifically smoke produced by burning gunpowder.