Den Haag vs The Hague

Den Haag and The Hague both are nouns.

Word	Noun	Adjective	Verb	Adverb
Den Haag	Yes	No	No	No
The Hague	Yes	No	No	No

As nouns, Den Haag and The Hague are synonyms defined as:

Den Haag and The Hague: 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

Other synonyms of Den Haag include 's Gravenhage.

Den Haag (noun)	The Hague (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	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