straighten up vs draw up

straighten up and draw up both are verbs.

Word	Noun	Adjective	Verb	Adverb
straighten up	No	No	Yes	No
draw up	No	No	Yes	No

As verbs, straighten up and draw up are synonyms defined as:

Other synonyms of straighten up include pull up.

straighten up (verb)	draw up (verb)
straighten oneself	make up plans or basic details for
	come to a halt after driving somewhere
	cause (a vehicle) to stop
	straighten oneself
	form or arrange in order or formation, as of a body of soldiers