city vs Ibadan

city and Ibadan both are nouns.

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

city (noun)	Ibadan (noun)
people living in a large densely populated municipality	a large Yoruba city in southwestern Nigeria; site of a university
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter