river vs Delaware River

river and Delaware River both are nouns.

Word	Noun	Adjective	Verb	Adverb
river	Yes	No	No	No
Delaware River	Yes	No	No	No

river (noun)	Delaware River (noun)
a large natural stream of water (larger than a creek)	a river that rises in the Catskills in southeastern New York and flows southward along the border of Pennsylvania with New York and New Jersey to northern Delaware where it empties into Delaware Bay