boreas vs current of air

boreas and current of air both are nouns.

Word	Noun	Adjective	Verb	Adverb
boreas	Yes	No	No	No
current of air	Yes	No	No	No

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

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

Other hypernyms of boreas include air current, wind.

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