Blue Ridge vs Blue Ridge Mountains

Blue Ridge and Blue Ridge Mountains both are nouns.

Word	Noun	Adjective	Verb	Adverb
Blue Ridge	Yes	No	No	No
Blue Ridge Mountains	Yes	No	No	No

As nouns, Blue Ridge and Blue Ridge Mountains are synonyms defined as:

Blue Ridge and Blue Ridge Mountains: a range of the Appalachians extending from southern Pennsylvania to northern Georgia

Blue Ridge (noun)	Blue Ridge Mountains (noun)
a range of the Appalachians extending from southern Pennsylvania to northern Georgia	a range of the Appalachians extending from southern Pennsylvania to northern Georgia