Is spring and stream the same as a small river?

A spring is a natural source of water that emerges from the ground. A stream is a small body of water that flows from a higher to a lower elevation. A river is a large body of water that flows from a source (such as a spring or glacier) to an ocean or other body of water.

Therefore, a spring and stream are not the same as a small river. A spring is the source of a stream, and a stream is a small river.