牡牛[oushi] bull
牡牛座[oushiza] Taurus (constellation)
牡丹[botan] tree peony (Paeonia suffruticosa)
牡丹餅[botamochi] adzuki bean mochi
牡羊[ohitsuji] ram

牡羊座[ohitsujiza] Aries (constellation)
牡蛎[borei] oyster
天竺牡丹[tenjikubotan] dahlia
牡鶏[ondori] cock
葉牡丹[habotan] ornamental kale (Brassica oleracea var. acephara)

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

馬酔木[asebi] Japanese andromeda (Pieris japonica)
馬鈴薯[jagaimo] potato (Solanum tuberosum)
じゃじゃ馬[jajauma] restive horse
玖馬[kyuuba] Cuba
トロイの木馬[toroinomokuba] Trojan horse

巴奈馬[panama] Panama
馬克[maruku] mark
羅馬字[roomaji] Latin alphabet
ワープロ馬鹿[waapurobaka] someone whose kanji-writing ability has suffered due to overreliance on the kana-to-kanji conversion systems used to input Japanese text on a computer
愛馬[aiba] favourite horse