火(か)山(ざん) kazan volcano 活(かつ)火(か)山(ざん) kakkazan active volcano 火(か)口(こう) kakou crater 火(か)曜(よう) kayou Tuesday 火(ひ)元(もと) himoto origin of a fire 火(か)力(りょく) karyoku firepower 火(か)曜(よう)日(び) kayoubi Tuesday 火(か)災(さい) kasai fire