constrain vs confine

constrain and confine both are verbs.

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

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

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

As verbs, constrain and confine are synonyms defined as:

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

Other synonyms of constrain include hold, restrain.

constrain (verb)	confine (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	to close within bounds, or otherwise limit or deprive of free movement
compel to behave in a certain way	prevent from leaving or from being removed
	deprive of freedom; take into confinement
	close in