languor vs air current

languor and air current both are nouns.

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

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

languor: oppressively still air
air current: air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure

Other hypernyms of languor include current of air, wind.

languor (noun)	air current (noun)
inactivity; showing an unusual lack of energy	air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure
a relaxed comfortable feeling
a feeling of lack of interest or energy
oppressively still air