river vs Ganges River

river and Ganges River both are nouns.

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

river (noun)	Ganges River (noun)
a large natural stream of water (larger than a creek)	an Asian river; rises in the Himalayas and flows east into the Bay of Bengal; a sacred river of the Hindus