wester vs air current

wester and air current both are nouns.

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

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

wester: 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 wester include current of air, wind.

wester (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