draw the line vs restrict

draw the line and restrict both are verbs.

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

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

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

draw the line (verb)	restrict (verb)
reasonably object (to) or set a limit (on)	place limits on (extent or amount or access)
	place restrictions on
	place under restrictions; limit access to by law
	prevent (information) from being circulated or disclosed