react vs bristle

react is not a noun while bristle is a noun.

Word	Noun	Adjective	Verb	Adverb
react	No	No	Yes	No
bristle	Yes	No	Yes	No

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

react (noun)	bristle (noun)
	a stiff hair
	a stiff fiber (coarse hair or filament); natural or synthetic

react (verb)	bristle (verb)
undergo a chemical reaction; react with another substance under certain conditions	react in an offended or angry manner
show a response or a reaction to something	rise up as in fear
act against or in opposition to	be in a state of movement or action
	have or be thickly covered with or as if with bristles