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

パイプ爆弾[paipubakudan] pipe bomb
プラスチック爆弾[purasuchikkubakudan] plastic explosive
宇宙大爆発[uchuudaibakuhatsu] Big Bang (theory)
核爆弾[kakubakudan] nuclear weapon
核爆発[kakubakuhatsu] nuclear explosion

起爆[kibaku] exploding
起爆装置[kibakusouchi] detonator
原子爆弾[genshibakudan] atomic bomb
原子爆発[genshibakuhatsu] atomic explosion
原水爆[gensuibaku] atom and hydrogen bomb