urban center vs Den Haag

urban center and Den Haag both are nouns.

Word	Noun	Adjective	Verb	Adverb
urban center	Yes	No	No	No
Den Haag	Yes	No	No	No

urban center (noun)	Den Haag (noun)
a large and densely populated urban area; may include several independent administrative districts	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