outwash plain
No the word plain is not a noun. It is an adjective.
Lava plain
what is the symbol on a map to show plain
Geographically, a "plain" is a large, treeless area of level or nearly level land. By convention the term "plain" is usually used to describe a low level flat area such as a coastal plain, sea floor plain, a river plain or a lunar plain (mare) rather than an elevated flat area which would be called a plateau.
Plain
Northeastern Plain ( Manchurian Plain )
The North China Plain is a plain in China.
She wore a plain shirt. That is a very plain design. Plain as can be, he walked over here.
The largest plain in Europe is known as either the European Plain or the Great European Plain.
the Famous plain is north European plain
alluvial plain, coastal plain, delta, delta plain.
The North China Plain
Serengeti Plain
the inner coastal plain, the outer coastal plain, and the Piedmont
The Nullarbor Plain
plain