urban center vs Limeira

urban center and Limeira both are nouns.

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

urban center (noun)	Limeira (noun)
a large and densely populated urban area; may include several independent administrative districts	a city of southeastern Brazil (northwest of Sao Paulo)