prevent vs restrain

prevent and restrain both are verbs.

Word	Noun	Adjective	Verb	Adverb
prevent	No	No	Yes	No
restrain	No	No	Yes	No

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

prevent: stop (someone or something) from doing something or being in a certain state
restrain: prevent (someone or something) from doing something

prevent (verb)	restrain (verb)
stop (someone or something) from doing something or being in a certain state	prevent the action or expression of
keep from happening or arising; make impossible	to close within bounds, or otherwise limit or deprive of free movement
	restrict (someone or something) so as to make free movement difficult
	prevent (someone or something) from doing something