Mombasa vs city

Mombasa and city both are nouns.

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

Mombasa (noun)	city (noun)
a port city in southern Kenya on a coral island in a bay of the Indian Ocean	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