North Dakota vs Peace Garden State

North Dakota and Peace Garden State both are nouns.

Word	Noun	Adjective	Verb	Adverb
North Dakota	Yes	No	No	No
Peace Garden State	Yes	No	No	No

As nouns, North Dakota and Peace Garden State are synonyms defined as:

North Dakota and Peace Garden State: a state of north central United States bordering on Canada

Other synonyms of North Dakota include N.D., ND.

North Dakota (noun)	Peace Garden State (noun)
a state of north central United States bordering on Canada	a state of north central United States bordering on Canada