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

鎖樋[kusaritoi] rain chain (hanging from a gutter and functioning as downspout, often made of ornamental cups)
伏樋[fusedoi] covered drain
雨樋[amadoi] drainspout
樋川[higawa] (water) spring

軒樋[nokidoi] rain gutter
竪樋[tatedoi] downpipe
呼び樋[yobidoi] elbow
樋殿[hidono] toilet