Ouse vs Ouse River

Ouse and Ouse River both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ouse	Yes	No	No	No
Ouse River	Yes	No	No	No

As nouns, Ouse and Ouse River are synonyms defined as:

Ouse and Ouse River: a river in northeastern England that flows generally southeastward to join the Trent River and form the Humber

Other synonyms of Ouse include River Ouse.

Ouse (noun)	Ouse River (noun)
a river in northeastern England that flows generally southeastward to join the Trent River and form the Humber	a river in northeastern England that flows generally southeastward to join the Trent River and form the Humber