west wind vs air current

west wind and air current both are nouns.

Word	Noun	Adjective	Verb	Adverb
west wind	Yes	No	No	No
air current	Yes	No	No	No

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

west wind: wind that blows from west to east
air current: air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure

Other hypernyms of west wind include current of air, wind.

west wind (noun)	air current (noun)
wind that blows from west to east	air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure