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

明白[meihaku] obvious
白地[akarasama] plain
白口[shiroguchi] white croaker (Pennahia argentata)
白耳義[berugii] Belgium
白竜[peeron] dragon boat (long 22-person canoe used for racing)

黄白[kouhaku] yellow and white
黄白色[ouhakushoku] yellowish-white
灰白[kaihaku] gray
灰白質[kaihakushitsu] gray matter
灰白色[kaihakushoku] grayish white