Sambre vs Sambre River

Sambre and Sambre River both are nouns.

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

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

Sambre and Sambre River: a river in western Europe that rises in northern France and flows generally east into Belgium where it joins the Meuse at Namur

Sambre (noun)	Sambre River (noun)
a river in western Europe that rises in northern France and flows generally east into Belgium where it joins the Meuse at Namur	a river in western Europe that rises in northern France and flows generally east into Belgium where it joins the Meuse at Namur