urban center vs Breslau

urban center and Breslau both are nouns.

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

urban center (noun)	Breslau (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in southwestern Poland on the Oder