urban center vs Brasov

urban center and Brasov both are nouns.

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

urban center (noun)	Brasov (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in central Romania in the foothills of the Transylvanian Alps