urban center vs Soweto

urban center and Soweto both are nouns.

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

urban center (noun)	Soweto (noun)
a large and densely populated urban area; may include several independent administrative districts	a large collection of African townships to the southwest of Johannesburg in South Africa; inhabited solely by Black Africans