Savannah vs river

Savannah and river both are nouns.

Word	Noun	Adjective	Verb	Adverb
Savannah	Yes	No	No	No
river	Yes	No	No	No

Savannah (noun)	river (noun)
a port in eastern Georgia near the mouth of the Savannah river	a large natural stream of water (larger than a creek)
a river in South Carolina that flows southeast to the Atlantic