urban center vs Ufa

urban center and Ufa both are nouns.

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

urban center (noun)	Ufa (noun)
a large and densely populated urban area; may include several independent administrative districts	the capital city of the Republic of Bashkortostan, Russia