urban center vs Dobrich

urban center and Dobrich both are nouns.

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

urban center (noun)	Dobrich (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in northeastern Bulgaria (north of Varna) that is the commercial center of an agricultural region