city vs Bari

city and Bari both are nouns.

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

city (noun)	Bari (noun)
people living in a large densely populated municipality	capital city of the Apulia region on the Adriatic coast
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter