一掃[issou] clean sweep
真空掃除機[shinkuusoujiki] vacuum cleaner
清掃[seisou] cleaning
清掃車[seisousha] garbage truck
清掃夫[seisoufu] garbage man

掃き寄せる[hakiyoseru] to sweep up
掃き集める[hakiatsumeru] to sweep up together
掃き出す[hakidasu] to release
掃き立て[hakitate] being newly-swept
掃溜[hakidame] rubbish heap

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