draw back vs retreat

draw back is not a noun while retreat is a noun.

Word	Noun	Adjective	Verb	Adverb
draw back	No	No	Yes	No
retreat	Yes	No	Yes	No

As verbs, draw back and retreat are synonyms defined as:

Other synonyms of draw back include move back, pull away, pull back, recede, retire, withdraw.

As verbs, retreat is a hyponym of draw back; that is, retreat is a word with a more specific, narrower meaning than draw back:

Other hyponyms of draw back include fall back, retrograde, back down, back off, back up.

draw back (noun)	retreat (noun)
	(military) withdrawal of troops to a more favorable position to escape the enemy's superior forces or after a defeat
	withdrawal for prayer and study and meditation
	the act of withdrawing or going backward (especially to escape something hazardous or unpleasant)
	an area where you can be alone
	(military) a bugle call signaling the lowering of the flag at sunset
	(military) a signal to begin a withdrawal from a dangerous position
	a place of privacy; a place affording peace and quiet

draw back (verb)	retreat (verb)
use a surgical instrument to hold open (the edges of a wound or an organ)	make a retreat from an earlier commitment or activity
pull back or move away or backward	pull back or move away or backward
	move back
	move away, as for privacy