Answer:

Plateau- A plateau is a FLAT, elevated landform that rises sharply above the surrounding area on at least one side. Plateaus occur on every CONTINENT and take up a third of the Earths land. They are one of the four major landforms, along with mountains, plains, and HILLS.

Mountain -

Explanation:

A mountain is a large landform that rises above the surrounding land in a limited area, usually in the form of a peak. A mountain is generally considered to be steeper thana hill. Mountains are formed through tectonic forces or volcanism. These forces can locally raise the surface .

Plain - plain is a landmass that generally does not change MUCH in elevation. Plains occur as lowlands along valleys or on the doorsteps of mountains, as coastal plains, and as plateaus or uplands.

Coast - The coast, also known as the coastline or seashore, is defined as the area where land meets the sea or ocean,[1] or as a line that forms the boundary between the land and the ocean or a lake.[2] Around 620,000 KILOMETRES (390,000 mi) of coastline are on Earth.

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