sou'easter vs air current

sou'easter and air current both are nouns.

Word	Noun	Adjective	Verb	Adverb
sou'easter	Yes	No	No	No
air current	Yes	No	No	No

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

sou'easter: a strong wind from the southeast
air current: air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure

Other hypernyms of sou'easter include current of air, wind.

sou'easter (noun)	air current (noun)
a strong wind from the southeast	air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure