constrain vs restrain

constrain and restrain both are verbs.

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

As verbs, constrain and restrain are synonyms defined as:

constrain and restrain: to close within bounds, or otherwise limit or deprive of free movement

Other synonyms of constrain include confine, hold.

constrain (verb)	restrain (verb)
severely restrict in scope or extent	prevent the action or expression of
to close within bounds, or otherwise limit or deprive of free movement	to close within bounds, or otherwise limit or deprive of free movement
compel to behave in a certain way	restrict (someone or something) so as to make free movement difficult
	prevent (someone or something) from doing something