southern vs Confederate

southern is not a noun while Confederate is a noun.

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

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

southern (adjective)	Confederate (adjective)
situated in or coming from regions of the south	of or having to do with the southern Confederacy during the American Civil War
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