bridle vs restraint

bridle and restraint both are nouns.

Word	Noun	Adjective	Verb	Adverb
bridle	Yes	No	Yes	No
restraint	Yes	No	No	No

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

bridle (noun)	restraint (noun)
the act of restraining power or action or limiting excess	the act of controlling by restraining someone or something
headgear for a horse; includes a headstall and bit and reins to give the rider or driver control	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

bridle (verb)	restraint (verb)
respond to the reins, as of horses
put a bridle on
anger or take offense