お別れ[owakare] farewell
哀別[aibetsu] sad parting
一分別[hitofunbetsu] careful consideration
一別[ichibetsu] parting
永別[eibetsu] last farewell

格別[kakubetsu] exceptional
鑑別[kanbetsu] discrimination
泣別れ[nakiwakare] part in tears
區別[kubetsu] distinction
訣別[ketsubetsu] separation

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