react vs refuse

react is not a noun while refuse is a noun.

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

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

react (noun)	refuse (noun)
	food that is discarded (as from a kitchen)

react (verb)	refuse (verb)
undergo a chemical reaction; react with another substance under certain conditions	show unwillingness towards
show a response or a reaction to something	not accept as true
act against or in opposition to	refuse to let have
	refuse entrance or membership
	elude, especially in a baffling way
	resist immunologically the introduction of some foreign tissue or organ