noun
white smoke
Refers to smoke that is white in color, often from a fire, chimney, or volcanic activity.
火山から白煙が上がっている。
White smoke is rising from the volcano.
煙突から白煙が出ている。
White smoke is coming out of the chimney.
黒煙 means black smoke, often from burning oil or rubber, while 白煙 is white smoke.
Compound of 白 (white) and 煙 (smoke).