Ozarks vs Ozark Mountains

Ozarks and Ozark Mountains both are nouns.

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

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

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

Other synonyms of Ozarks include Ozark Plateau.

Ozarks (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