urban center vs Trento

urban center and Trento both are nouns.

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

urban center (noun)	Trento (noun)
a large and densely populated urban area; may include several independent administrative districts	a city in northern Italy (northwest of Venice) on the River Adige; the site of the Council of Trent