city vs Norfolk

city and Norfolk both are nouns.

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

city (noun)	Norfolk (noun)
people living in a large densely populated municipality	port city located in southeastern Virginia on the Elizabeth River at the mouth of Chesapeake Bay; headquarters of the Atlantic fleet of the United States Navy
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter