gentle wind vs air current

gentle wind and air current both are nouns.

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

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

gentle wind: a slight wind (usually refreshing)
air current: air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure

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

gentle wind (noun)	air current (noun)
a slight wind (usually refreshing)	air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure