Bologna vs city

Bologna and city both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bologna	Yes	No	No	No
city	Yes	No	No	No

Bologna (noun)	city (noun)
the capital of Emilia-Romagna; located in northern Italy to the east of the Apennines	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts
	an incorporated administrative district established by state charter