Confederate vs southern

Confederate is a noun but southern is not a noun.

Word	Noun	Adjective	Verb	Adverb
Confederate	Yes	Yes	No	No
southern	No	Yes	No	No

Confederate (noun)	southern (noun)
a supporter of the Confederate States of America

Confederate (adjective)	southern (adjective)
of or having to do with the southern Confederacy during the American Civil War	situated in or coming from regions of the south
	in or characteristic of a region of the United States south of (approximately) the Mason-Dixon line
	from the south; used especially of wind
	situated in or oriented toward the south