What do a body of water and a watercourse have in common?

Both a body of water and a watercourse are water bodies that can be both surface and underground, as well as have a natural natural origin or artificially created by man. In addition to common features, a body of water and a watercourse have many differences. Water bodies include objects that have a very slow or no flow at all: a lake, a pond, a reservoir. On the other hand, streams have a constant movement of water: a river, a stream, a canal, a ditch.