aileron vs airfoil

aileron and airfoil both are nouns.

Word	Noun	Adjective	Verb	Adverb
aileron	Yes	No	No	No
airfoil	Yes	No	No	No

As nouns, airfoil is a hypernym of aileron; that is, airfoil is a word with a broader meaning than aileron:

aileron: an airfoil that controls lateral motion
airfoil: a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight

Other hypernyms of aileron include aerofoil, control surface, surface.

aileron (noun)	airfoil (noun)
an airfoil that controls lateral motion	a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight