urban center vs Venezia

urban center and Venezia both are nouns.

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

urban center (noun)	Venezia (noun)
a large and densely populated urban area; may include several independent administrative districts	the provincial capital of Veneto; built on 118 islands within a lagoon in the Gulf of Venice; has canals instead of streets; one of Italy's major ports and a famous tourist attraction