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

河内[hanoi] Hanoi
運河[unga] canal
応急渡河[oukyuutoka] hasty crossing
黄河[kouga] Yellow river (in China)
河港[kakou] river port

河鹿[kajika] kajika frog (Buergeria buergeri)
河床[kashou] riverbed
河水[kasui] river water
河川[kasen] rivers
河童[kappa] kappa (mythical water-dwelling creatures)

竹蜻蛉[taketonbo] small wooden Japanese toy that flies when spun between the palms of one's hands
蜻蛉返り[tonbogaeri] somersault
蜻蛉[fuyuu] mayfly
蜻蛉[tonbo] dragonfly
尻切れ蜻蛉[shirikiretonbo] leaving unfinished

塩辛蜻蛉[shiokaratonbo] Orthetrum albistylum speciosum (subspecies of white-tailed skimmer)
糸蜻蛉[itotonbo] damselfly
赤蜻蛉[akatonbo] (small) red dragonfly
麦藁蜻蛉[mugiwaratonbo] dragonfly
極楽蜻蛉[gokurakutonbo] happy-go-lucky fellow

竹蜻蛉[taketonbo] small wooden Japanese toy that flies when spun between the palms of one's hands
蜻蛉返り[tonbogaeri] somersault
蜻蛉[fuyuu] mayfly
蜻蜓[tonbou] dragonfly
尻切れ蜻蛉[shirikiretonbo] leaving unfinished

塩辛蜻蛉[shiokaratonbo] Orthetrum albistylum speciosum (subspecies of white-tailed skimmer)
糸蜻蛉[itotonbo] damselfly
赤蜻蛉[akatonbo] (small) red dragonfly
麦藁蜻蛉[mugiwaratonbo] dragonfly
極楽蜻蛉[gokurakutonbo] happy-go-lucky fellow