city vs Annaba

city and Annaba both are nouns.

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

city (noun)	Annaba (noun)
people living in a large densely populated municipality	a port city of northeastern Algeria near the Tunisian border
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter