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

鱶鰭[fukahire] shark fin
羅鱶[rabuka] frilled shark (Chlamydoselachus anguineus)
睡鱶[nemuribuka] whitetip reef shark (Triaenodon obesus, species of Indo-Pacific requiem shark)
水鱶[mizubuka] blue shark (Prionace glauca, species of circumglobal requiem shark)

鱶の鰭[fukanohire] shark fin
鱶鰭スープ[fukahiresuupu] shark fin soup
鱶潤目[fukaurume] shark fin