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

黄楊[tsuge] Japanese box tree (Buxus microphylla var. japonica)
垂楊[suiyou] weeping willow
妻楊枝[tsumayouji] toothpick
楊柳[yanagi] willow (any tree of genus Salix)
楊子[youji] toothpick

犬黄楊[inutsuge] Japanese holly (Ilex crenata)
白楊[hakuyou] Japanese aspen (Populus tremula var. sieboldii)
白楊[doronoki] Japanese poplar (Populus maximowiczii)
高楊枝[takayouji] leisurely, post-meal use of a toothpick
楊柳[kawayanagi] riverside willow (esp. rosegold pussy willow, Salix gracilistyla)