The term 'flow of water' can be described by three words: STREAM (6 letters), river (5 letters), and FLOOD (5 letters). A STREAM is a small body of water that flows in a channel, usually on land. Rivers are larger than streams and flow from higher to lower elevations, often emptying into a lake or ocean. Floods occur when rivers overflow their banks due to heavy rains or melting snow, causing large amounts of water to spread over the land.