urban center vs Versailles

urban center and Versailles both are nouns.

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

urban center (noun)	Versailles (noun)
a large and densely populated urban area; may include several independent administrative districts	a palace built in the 17th century for Louis XIV southwest of Paris near the city of Versailles
	a city in north central France near Paris; site of the Palace of Versailles that was built by Louis XIV in the 17th century