Saale River vs river

Saale River and river both are nouns.

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

Saale River (noun)	river (noun)
a river that rises in central Germany and flows north to join the Elbe River	a large natural stream of water (larger than a creek)