A stream of water flowing from high to low elevation. It empties into a lake, ocean, gulf, or other body of water.

A body of water flowing into a larger body of water.

A land mass with a high elevation that is often jagged and rocky or covered in trees or snow.

A land mass with a higher elevation but smaller and less rocky and jagged than mountains.

An area of land that is usually flat.

A flat area of land with a high elevation compared to the land surrounding it.

An area of land surrounded by water on all sides.

An area of land surrounded by water on three sides.

An area of water connected to an ocean or sea but partially surrounded by land. It is almost always larger than a bay.

An area of water surrounded by land, usually on three sides.