a broad area of flat land.
a large landform that stretches above the surrounding land.
a hot and dry area of land with little rain or vegetation (plants).
a large body of saltwater that is surrounded in whole or in part by land.
a large body of saltwater that covers nearly three fourths of the
surface of the Earth.
a large natural flow of water that crosses an area of land and goes
to an ocean, sea, lake or another river.