southerly vs south

southerly and south both are nouns.

Word	Noun	Adjective	Verb	Adverb
southerly	Yes	Yes	No	Yes
south	Yes	Yes	No	Yes

southerly (noun)	south (noun)
a wind from the south	a location in the southern part of a country, region, or city
	the cardinal compass point that is at 180 degrees
	the direction corresponding to the southward cardinal compass point

southerly (adjective)	south (adjective)
from the south; used especially of wind	situated in or facing or moving toward or coming from the south
situated in or oriented toward the south

southerly (adverb)	south (adverb)
from the south	in a southern direction
toward the south