's Gravenhage vs urban center

's Gravenhage and urban center both are nouns.

Word	Noun	Adjective	Verb	Adverb
's Gravenhage	Yes	No	No	No
urban center	Yes	No	No	No

's Gravenhage (noun)	urban center (noun)
the site of the royal residence and the de facto capital in the western part of the Netherlands; seat of the International Court of Justice	a large and densely populated urban area; may include several independent administrative districts