draw the line vs confine

draw the line and confine both are verbs.

Word	Noun	Adjective	Verb	Adverb
draw the line	No	No	Yes	No
confine	No	No	Yes	No

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

Other hypernyms of draw the line include bound, limit, restrict, throttle, trammel.

draw the line (verb)	confine (verb)
reasonably object (to) or set a limit (on)	place limits on (extent or amount or access)
	to close within bounds, or otherwise limit or deprive of free movement
	prevent from leaving or from being removed
	deprive of freedom; take into confinement
	close in