Source, The place where a river begins., Middle Course, Flows along land featuring lots of meanders., Course, The route a river takes., Lower Course, Final stage of rivers journey., Waterfall, Where the river spills suddenly downward., Upper Course, Section of river closest to its source., Mouth, The place where the river enters a larger body of water., Meander, Winding curve or bend in river., Bank, The land alongside a river., Tributary, A river that flows into a larger river..

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