Fla. vs St. Johns River

Fla. and St. Johns River both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fla.	Yes	No	No	No
St. Johns River	Yes	No	No	No

Fla. (noun)	St. Johns River (noun)
a state in southeastern United States between the Atlantic and the Gulf of Mexico; one of the Confederate states during the American Civil War	a river in northeastern Florida that flows northward to Jacksonville and then eastward to empty into the Atlantic Ocean