英雄[eiyuu] hero
英雄的[eiyuuteki] heroic
雄牛[oushi] bull
雄羊[ohitsuji] ram
群雄[gunyuu] rival chiefs

群雄割拠[gunyuukakkyo] rivalry of local warlords
雌雄[shiyuu] male and female (animal)
反英雄[haneiyuu] antihero
雄壮[yuusou] heroic
雄たけび[osakebi] war cry

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