constraint vs airbrake

constraint and airbrake both are nouns.

Word	Noun	Adjective	Verb	Adverb
constraint	Yes	No	No	No
airbrake	Yes	No	No	No

As nouns, airbrake is a hyponym of constraint; that is, airbrake is a word with a more specific, narrower meaning than constraint:

constraint: a device that retards something's motion
airbrake: a small parachute or articulated flap to reduce the speed of an aircraft

constraint (noun)	airbrake (noun)
the act of constraining; the threat or use of force to control the thoughts or behavior of others	a vehicular brake that operates by compressed air; especially for heavy vehicles
a device that retards something's motion	a small parachute or articulated flap to reduce the speed of an aircraft
the state of being physically constrained