urban center vs Urmia

urban center and Urmia both are nouns.

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

urban center (noun)	Urmia (noun)
a large and densely populated urban area; may include several independent administrative districts	a city on the western side of Lake Urmia in northwestern Iran
	a shallow saline lake in northwestern Iran between Tabriz and the eastern border of Turkey