flap vs airfoil

airfoil vs flap

flap and airfoil both are nouns.

flap is a verb but airfoil is not a verb.

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

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

flap: a movable airfoil that is part of an aircraft wing; used to increase lift or drag
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 flap include aerofoil, control surface, surface.

flap (noun)	airfoil (noun)
any broad thin and limber covering attached at one edge; hangs loose or projects freely	a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight
a movable airfoil that is part of an aircraft wing; used to increase lift or drag
a movable piece of tissue partly connected to the body
the motion made by flapping up and down
an excited state of agitation

flap (verb)	airfoil (verb)
pronounce with a flap, of alveolar sounds
make a fuss; be agitated
to flutter noisily when moved by the wind
move in a wavy pattern or with a rising and falling motion
move with a flapping motion
move with a thrashing motion

Difference between flap and airfoil

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