Bluegrass Country vs Bluegrass Region

Bluegrass Country and Bluegrass Region both are nouns.

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

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

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

Other synonyms of Bluegrass Country include Bluegrass.

Bluegrass Country (noun)	Bluegrass Region (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