constrain vs restrict

constrain and restrict both are verbs.

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

As verbs, restrict is a hypernym of constrain; that is, restrict is a word with a broader meaning than constrain:

Other hypernyms of constrain include bound, confine, limit, throttle, trammel.

constrain (verb)	restrict (verb)
severely restrict in scope or extent	place limits on (extent or amount or access)
to close within bounds, or otherwise limit or deprive of free movement	place restrictions on
compel to behave in a certain way	place under restrictions; limit access to by law
	prevent (information) from being circulated or disclosed