Nouns

(n)prevailing westerly, westerlythe winds from the west that occur in the temperate zones of the Earth

Adjectives

(s)westerly, westernof wind; from the west
(s)westbound, westerly, westwardmoving toward the west“westbound pioneers”

Adverbs

(r)westerlyin a westward direction“we began to steer away westerly” (Daniel Defoe)
(r)westerlyfrom the west“the wind blew westerly”