urban center vs Jinja

urban center and Jinja both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Jinja	Yes	No	No	No

urban center (noun)	Jinja (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in Uganda on the north shore of Lake Victoria