east wind vs current of air

east wind and current of air both are nouns.

Word	Noun	Adjective	Verb	Adverb
east wind	Yes	No	No	No
current of air	Yes	No	No	No

As nouns, current of air is a hypernym of east wind; that is, current of air is a word with a broader meaning than east wind:

east wind: a wind from the east
current of air: air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure

Other hypernyms of east wind include air current, wind.

east wind (noun)	current of air (noun)
a wind from the east	air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure