respond vs bridle

respond is not a noun while bridle is a noun.

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

As verbs, bridle is a hyponym of respond; that is, bridle is a word with a more specific, narrower meaning than respond:

Other hyponyms of respond include call back, counter, field, sass, come back, rejoin, repay, retort, return, riposte.

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

respond (verb)	bridle (verb)
show a response or a reaction to something	respond to the reins, as of horses
respond favorably or as hoped	put a bridle on
react verbally	anger or take offense