air current vs chinook

air current and chinook both are nouns.

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

As nouns, chinook is a hyponym of air current; that is, chinook is a word with a more specific, narrower meaning than air current:

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

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