Nouns

(n)east wind, easter, easterlya wind from the east

Adjectives

(s)easterly, easternlying in or toward the east“the east side of New York”, “eastern cities”
(s)easterly, easternfrom the east; used especially of winds“an eastern wind”, “the winds are easterly”

Adverbs

(r)easterlyfrom the east“the winds blew easterly all night”