小癪[koshaku] impudent
疳癪[kanshaku] passion
癪に触る[shakunisawaru] to irritate
疳癪玉[kanshakudama] fit of anger

癇癪持ち[kanshakumochi] hot-tempered person
癪の種[shakunotane] irritant
癇癪を起こす[kanshakuwookosu] to lose one's temper

亜種[ashu] subspecies
異機種[ikishu] heterogenous equipment
異種[ishu] different kind (species, variety)
育種[ikushu] (plant) breeding
育種家[ikushuka] (plant) breeder

育種所[ikushujo] (plant) nursery
一種[isshu] species
一粒種[hitotsubudane] an only child
種違い[tanechigai] half-brother
艶種[tsuyadane] love affair