Mississippi vs Confederate States

Mississippi and Confederate States both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mississippi	Yes	No	No	No
Confederate States	Yes	No	No	No

Mississippi (noun)	Confederate States (noun)
a state in the Deep South on the gulf of Mexico; one of the Confederate States during the American Civil War	the southern states that seceded from the United States in 1861
a major North American river and the chief river of the United States; rises in northern Minnesota and flows southward into the Gulf of Mexico