city vs Oran

city and Oran both are nouns.

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

city (noun)	Oran (noun)
people living in a large densely populated municipality	a port city in northwestern Algeria and the country's 2nd largest city
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter