tributary
tributary
tributary
tributary
The mouth of a stream is where it meets a larger body of water, such as a lake, ocean, or another stream. It is where the stream's water flows out and mixes with the water of the larger body.
The stream of water which flows like a river through the ocean is a current. The Gulf Stream is the most significant such current which flows from the tropics to the northern latitudes.
A river is a large stream of fresh water that flows across land and empties into an ocean, lake, or some other body of water.
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There is no single name for a single stream of water that flows into an ocean but headwaters would be a good one for a single stream of water into a lake
Ocean current
currents
current people
A river?