Ozark Plateau vs Ozark Mountains

Ozark Plateau and Ozark Mountains both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ozark Plateau	Yes	No	No	No
Ozark Mountains	Yes	No	No	No

As nouns, Ozark Plateau and Ozark Mountains are synonyms defined as:

Ozark Plateau and Ozark Mountains: an area of low mountains in northwestern Arkansas and southeastern Missouri and northeastern Oklahoma

Other synonyms of Ozark Plateau include Ozarks.

Ozark Plateau (noun)	Ozark Mountains (noun)
an area of low mountains in northwestern Arkansas and southeastern Missouri and northeastern Oklahoma	an area of low mountains in northwestern Arkansas and southeastern Missouri and northeastern Oklahoma