urban center vs Cape Town

urban center and Cape Town both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Cape Town	Yes	No	No	No

urban center (noun)	Cape Town (noun)
a large and densely populated urban area; may include several independent administrative districts	port city in southwestern South Africa; the seat of the legislative branch of the government of South Africa