Canal
An irrigation channel is a conduit that transports water in order to irrigate agricultural land.
A watercourse is the course of the water - the pathway that the water takes through the land.
What does land near the water mean? It means the land ends and the water starts. Like beaches and coasts. What does green on a map mean water or land? ...
An isthmus, which you might mean is a thin strip of land connecting two larger bodies of land. This is kind of like a land bridge through the water.
A radio or T.V. frequency. An area of water that joins two larger areas of water, such as the English Channel.
A narrow channel in the ground for liquid to flow through.
The mouth of a river where it enters the sea.
It means the land ends and the water starts. Like beaches and coasts.
A strait is a narrow channel connecting two bodies of water.
The thermohaline current, the Gulf Stream, the English channel, a river or stream.
When we talk about a channel in the water, we mean a pathway in which the depth of the water is sufficient for the passage of whatever shipping or boats normally travel by means of that channel. If a ship does not remain in a channel, it is possible that it will encounter shallow water and run aground, or it may even strike a rock and be damaged (as in the recent memorable case of the Costa Concordia).
geomophology means a proces where by the land creating different features through the agent acting on it e.g water,air,ice etc