Coal
noun
せきたん
炭 (すみ) Charcoal
石炭 (せきたん) Coal
炭素 (たんそ) Carbon
炭鉱 (たんこう) Coal Mine, Coal Pit
胆石 (たんせき) Gallstones
鉱石 (こうせき) Ore, Mineral
Lay on reflective Coal to get a sexy せき tan たん
Charcoal comes from burned wood. Coal comes from rocks in a mine. They both contain the element Carbon.