Volunteer State vs Tennessee

Volunteer State and Tennessee both are nouns.

Word	Noun	Adjective	Verb	Adverb
Volunteer State	Yes	No	No	No
Tennessee	Yes	No	No	No

As nouns, Volunteer State and Tennessee are synonyms defined as:

Volunteer State and Tennessee: a state in east central United States with capital Nashville

Other synonyms of Volunteer State include Tenn., TN.

Volunteer State (noun)	Tennessee (noun)
a state in east central United States with capital Nashville	a state in east central United States with capital Nashville
	a river formed by the confluence of two other rivers near Knoxville; it follows a U-shaped course to become a tributary of the Ohio River in western Kentucky