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

器用貧乏[kiyoubinbou] Jack of all trades and master of none
救貧[kyuuhin] poor relief
極貧[gokuhin] destitution
清貧[seihin] honourable poverty
赤貧[sekihin] extreme poverty

脳貧血[nouhinketsu] cerebral anemia
貧しい[mazushii] poor
貧家[hinka] poor home
貧寒[hinkan] destitution
貧窮[hinkyuu] great poverty