air current vs foehn

air current and foehn both are nouns.

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

As nouns, foehn is a hyponym of air current; that is, foehn 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
foehn: a warm dry wind that blows down the northern slopes of the Alps

air current (noun)	foehn (noun)
air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure	a warm dry wind that blows down the northern slopes of the Alps