Palermo vs city

Palermo and city both are nouns.

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

Palermo (noun)	city (noun)
the capital of Sicily; located in northwestern Sicily; an important port for 3000 years	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