squall vs air current

squall and air current both are nouns.

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

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

squall: sudden violent winds; often accompanied by precipitation
air current: air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure

Other hypernyms of squall include current of air, wind.

squall (noun)	air current (noun)
sudden violent winds; often accompanied by precipitation	air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure

squall (verb)	air current (verb)
utter a sudden loud cry
make high-pitched, whiney noises
blow in a squall