ライン川[raingawa] (river) Rhine
安倍川餅[abekawamochi] rice cakes (mochi) with Kinako
川床[kawadoko] riverbed
河川[kasen] rivers
江川る[egawaru] to (try to) act like a big-shot

香川県[kagawaken] Kagawa prefecture (Shikoku)
三途の川[sanzunokawa] Sanzu River (Buddhist equivalent of the River Styx)
山川[sansen] mountains and rivers
四川[shisen] Sichuan (China)
小川[ogawa] streamlet

花柳界[karyuukai] red-light district
花柳病[karyuubyou] sexually transmitted disease
蒲柳[horyuu] purple willow
枝垂柳[shidareyanagi] weeping willow (Salix babylonica)
川柳[senryuu] comic haiku

楊柳[yanagi] willow (any tree of genus Salix)
柳腰[yanagigoshi] slim waist
柳川鍋[yanagawanabe] soup prepared with dojou
柳び[ryuubi] beautiful eyebrows
花柳[karyuu] red-light district