river vs Savannah

river and Savannah both are nouns.

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

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