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

嘘っ八百[usoppappyaku] full of lies
嘘八百[usohappyaku] full of lies
何百[nanbyaku] hundreds
五十歩百歩[gojuppohyappo] six of one and a half dozen of the other
三百[sanbyaku] 300

三百諸侯[sanbyakushokou] all the daimyos
三百代言[sanbyakudaigen] pettifogging lawyer
数百[suuhyaku] several hundreds
生誕百年[seitanhyakunen] 100th birthday anniversary
二百十日[nihyakutooka] 210th day (from the first day of spring according to the lunar calendar)