医学技術士[igakugijutsushi] medical technician
医学士[igakushi] Bachelor of Medicine
一言居士[ichigenkoji] person who is ready to comment on every subject
一士[isshi] private first-class (JSDF)
隠士[inshi] hermit

宇宙飛行士[uchuuhikoushi] astronaut
運転士[untenshi] driver
栄養士[eiyoushi] nutritionist
下士[kashi] noncommissioned officer
下士官[kashikan] non-commissioned officer

雄牛[oushi] bull
牡牛座[oushiza] Taurus (constellation)
乾燥牛乳[kansougyuunyuu] powdered milk
牛脂[gyuushi] beef tallow
牛飼い[ushikai] cattleman

牛耳る[gyuujiru] to control
牛舎[gyuusha] cow shed
牛車[gyuusha] ox carriage (for Heian era nobles)
牛小屋[ushigoya] cow shed

悪戦苦闘[akusenkutou] hard fighting
暗闘[antou] secret feud
階級闘争[kaikyuutousou] class struggle
挌闘[kakutou] hand-to-hand fighting
格闘戦部隊[kakutousenbutai] shock troops

敢闘[kantou] fighting bravely
共闘[kyoutou] joint struggle
苦闘[kutou] agonizing
激闘[gekitou] fierce fighting
決闘[kettou] duel