Susquehanna River vs river

Susquehanna River and river both are nouns.

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

Susquehanna River (noun)	river (noun)
a river in the northeastern United States that rises in New York and flows southward through Pennsylvania and Maryland into Chesapeake Bay	a large natural stream of water (larger than a creek)