urban center vs Toulon

urban center and Toulon both are nouns.

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

urban center (noun)	Toulon (noun)
a large and densely populated urban area; may include several independent administrative districts	a port city and naval base in southeastern France on the Mediterranean coast