Saint Francis River vs Show Me State

Saint Francis River and Show Me State both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saint Francis River	Yes	No	No	No
Show Me State	Yes	No	No	No

Saint Francis River (noun)	Show Me State (noun)
a tributary of the Mississippi River that rises in Missouri and flows southeastward through Arkansas	a midwestern state in central United States; a border state during the American Civil War, Missouri was admitted to the Confederacy without actually seceding from the Union