south vs southerly

south and southerly both are nouns.

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

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

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

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