chinook vs air current

chinook and air current both are nouns.

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

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

chinook: a warm dry wind blowing down the eastern slopes of the Rockies
air current: air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure

Other hypernyms of chinook include current of air, wind.

chinook (noun)	air current (noun)
large Pacific salmon valued as food; adults die after spawning	air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure
pink or white flesh of large Pacific salmon
a warm dry wind blowing down the eastern slopes of the Rockies