boreas vs air current

boreas and air current both are nouns.

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

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

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

Other hypernyms of boreas include current of air, wind.

boreas (noun)	air current (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