"river" - key terms from Wikipedia

arkansas river
black river
charles river
colorado river
columbia river
connecticut river
delaware river
detroit river
don river
east river
fall river
fox river
fraser river
grand river
green river
hudson river
indian river
james river
jordan river
lawrence river
little river
mississippi river
missouri river
mystic river
new river
niagara river
ohio river
ottawa river
peace river
pearl river
platte river
potomac river
red river
river
river	avon
river	basin
river	plate
river	thames
river	valley
salt river
snake river
susquehanna river
swan river
tennessee river
toms river
trinity river
white river
willamette river
yangtze river
yellow river