연탄煉炭 briquet 탄광炭鑛 coal mine; pit 탄광촌炭鑛村 coal-mining town 탄산炭酸 carbonic acid 탄산음료炭酸飮料 soda; carbonated drink 탄소炭素 carbon 탄수화물炭水化物 carbohydrate 구공탄九孔炭 coal briquette 도탄塗炭 distress 목탄木炭 charcoal 무연탄無煙炭 anthracite; hard coal 석탄石炭 coal 유연탄有煙炭 bituminous coal 이산화 탄소二酸化炭素 carbon dioxide 저탄소低炭素 low carbon