Bluegrass Country vs Bluegrass

Bluegrass Country and Bluegrass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bluegrass Country	Yes	No	No	No
Bluegrass	Yes	No	No	No

As nouns, Bluegrass Country and Bluegrass are synonyms defined as:

Bluegrass Country and Bluegrass: an area in central Kentucky noted for its bluegrass and thoroughbred horses

Other synonyms of Bluegrass Country include Bluegrass Region.

Bluegrass Country (noun)	Bluegrass (noun)
an area in central Kentucky noted for its bluegrass and thoroughbred horses	an area in central Kentucky noted for its bluegrass and thoroughbred horses