southern vs south-central

southern and south-central both are adjectives.

Word	Noun	Adjective	Verb	Adverb
southern	No	Yes	No	No
south-central	No	Yes	No	No

southern (adjective)	south-central (adjective)
situated in or coming from regions of the south	situated in the southern part of a centrally located area in some geographical region
in or characteristic of a region of the United States south of (approximately) the Mason-Dixon line	being in or of a region of the United States including the states of the lower Mississippi valley and east of the Rio Grande
from the south; used especially of wind
situated in or oriented toward the south