血清[kessei] serum
粛清[shukusei] (political) purge
真清水[mashimizu] pure water
清ます[sumasu] to clear
清む[sumu] to clear (e.g. weather)

清い[kiyoi] clear
清まる[kiyomaru] to be purified
清め[kiyome] purification
清める[kiyomeru] to purify
清らか[kiyoraka] clean

お風呂に入る[ofuronihairu] to take a bath
微風[bifuu] gentle breeze
トルコ風呂[torukoburo] Turkish bath
風太郎[puutarou] vagabond
悪風[akufuu] vice

威風[ifuu] majesty
異風[ifuu] unusual customs
遺風[ifuu] tradition
一風[ippuu] eccentric
一風変った[ippuukawatta] eccentric