Sabine vs Sabine River

Sabine and Sabine River both are nouns.

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

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

Sabine and Sabine River: a river in eastern Texas that flows south into the Gulf of Mexico

Sabine (noun)	Sabine River (noun)
a river in eastern Texas that flows south into the Gulf of Mexico	a river in eastern Texas that flows south into the Gulf of Mexico
a member of an ancient Oscan-speaking people of the central Apennines north of Rome who were conquered and assimilated into the Roman state in 290 BC

Sabine (adjective)	Sabine River (adjective)
of or relating to or characteristic of the Sabines