north wind vs northerly

north wind and northerly both are nouns.

Word	Noun	Adjective	Verb	Adverb
north wind	Yes	No	No	No
northerly	Yes	Yes	No	Yes

As nouns, north wind and northerly are synonyms defined as:

Other synonyms of north wind include boreas, norther.

north wind (noun)	northerly (noun)
a wind that blows from the north	a wind that blows from the north

north wind (adjective)	northerly (adjective)
	coming from the north; used especially of wind
	oriented toward the north

north wind (adverb)	northerly (adverb)
	in a northern direction