How to read: かたずみ
Pronunciation: 
Same names and idioms in reading:
固炭
Names and idioms with total stroke of 21:
嶋尾 落畑 拓慈 豚真 砂山南
Names and idioms similar to 堅炭:
久堅町 炭焼君 炭團 堅忍持久 炭化珪素
Yojijukugo(idioms with 4 Kanji characters) including 堅炭:
堅貞不屈 雪中送炭 堅塞固塁
Idioms including 堅炭:
口が堅い 霜を履んで堅氷至る