urban center vs Belo Horizonte

urban center and Belo Horizonte both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Belo Horizonte	Yes	No	No	No

urban center (noun)	Belo Horizonte (noun)
a large and densely populated urban area; may include several independent administrative districts	city in southeastern Brazil to the north of Rio de Janeiro; the first of Brazil's planned communities