reaction vs react

reaction is a noun but react is not a noun.

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

reaction (noun)	react (noun)
a bodily process occurring due to the effect of some antecedent stimulus or agent
doing something in opposition to another way of doing it that you don't like
an idea evoked by some experience
extreme conservatism in political or social matters
(mechanics) the equal and opposite force that is produced when any force is applied to a body
a response that reveals a person's feelings or attitude
(chemistry) a process in which one or more substances are changed into others

reaction (verb)	react (verb)
	undergo a chemical reaction; react with another substance under certain conditions
	show a response or a reaction to something
	act against or in opposition to