urban center vs Gothenburg

urban center and Gothenburg both are nouns.

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

urban center (noun)	Gothenburg (noun)
a large and densely populated urban area; may include several independent administrative districts	a port in southwestern Sweden; second largest city in Sweden