悪水[akusui] undrinkable water
井戸水[idomizu] well water
一衣帯水[ichiitaisui] (being separated only by a) narrow strip of water
一水[issui] current (of water)
溢水[issui] inundation

飲水量[insuiryou] amount of drinking
飲料水[inryousui] drinking water
烏の行水[karasunogyouzui] quick bath
雲水[unsui] itinerant priest
塩化水素[enkasuiso] hydrogen chloride

一般生活[ippanseikatsu] everyday life
隠退生活[intaiseikatsu] secluded life
火山活動[kazankatsudou] volcanic activity
快活[kaikatsu] cheerful
活火山[kakkazan] active volcano

活気[kakki] energy
活況[kakkyou] activity
活劇[katsugeki] action picture
活字[katsuji] printing type
活字体[katsujitai] printed form (of writing)

衛生基準[eiseikijun] health standards
下準備[shitajunbi] preliminary arrangements
間接照準射撃[kansetsushoujunshageki] indirect fire
規準化[kijunka] normalization
技術水準[gijutsusuijun] state-of-the-art

公準[koujun] postulate (in math, logic, etc.)
高水準[kousuijun] high level
準える[nazoraeru] to pattern after
準じる[junjiru] to follow

お生憎様[oainikusama] that's too bad (ironical)
御誕生日おめでとうございます[otanjoubiomedetougozaimasu] Happy Birthday
隣の芝生は青い[tonarinoshibafuhaaoi] the grass is always greener on the other side
生きがいい[ikigaii] fresh (e.g. fish)
コンピューター援用生産[konpyuutaaenyouseisan] computer-aided manufacture

委託生[itakusei] scholarship student sent by government office or business
生す[nasu] to build up
異常発生[ijouhassei] plague
医学生[igakusei] medical student
医学生物学[igakuseibutsugaku] medical biology