Weser vs Weser River

Weser and Weser River both are nouns.

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

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

Weser and Weser River: a river in northwestern Germany that flows northward to the North Sea near Bremerhaven

Weser (noun)	Weser River (noun)
a river in northwestern Germany that flows northward to the North Sea near Bremerhaven	a river in northwestern Germany that flows northward to the North Sea near Bremerhaven