Kentucky vs Bluegrass State

Kentucky and Bluegrass State both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kentucky	Yes	No	No	No
Bluegrass State	Yes	No	No	No

As nouns, Kentucky and Bluegrass State are synonyms defined as:

Kentucky and Bluegrass State: a state in east central United States; a border state during the American Civil War; famous for breeding race horses

Other synonyms of Kentucky include Ken., KY.

Kentucky (noun)	Bluegrass State (noun)
a state in east central United States; a border state during the American Civil War; famous for breeding race horses	a state in east central United States; a border state during the American Civil War; famous for breeding race horses