dive brake vs restraint

dive brake and restraint both are nouns.

Word	Noun	Adjective	Verb	Adverb
dive brake	Yes	No	No	No
restraint	Yes	No	No	No

As nouns, restraint is a hypernym of dive brake; that is, restraint is a word with a broader meaning than dive brake:

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

Other hypernyms of dive brake include constraint.

dive brake (noun)	restraint (noun)
a small parachute or articulated flap to reduce the speed of an aircraft	the act of controlling by restraining someone or something
	a device that retards something's motion
	discipline in personal and social activities
	lack of ornamentation
	a rule or condition that limits freedom
	the state of being physically constrained