State of the Vatican City vs Roma

State of the Vatican City and Roma both are nouns.

Word	Noun	Adjective	Verb	Adverb
State of the Vatican City	Yes	No	No	No
Roma	Yes	No	No	No

State of the Vatican City (noun)	Roma (noun)
the smallest sovereign state in the world; the see of the Pope (as the Bishop of Rome); home of the Pope and the central administration of the Roman Catholic Church; achieved independence from Italy in 1929	capital and largest city of Italy; on the Tiber; seat of the Roman Catholic Church; formerly the capital of the Roman Republic and the Roman Empire
	a member of a people with dark skin and hair who speak Romany and who traditionally live by seasonal work and fortunetelling; they are believed to have originated in northern India but now are living on all continents (but mostly in Europe, North Africa, and North America)