retractor vs retract

retractor is a noun but retract is not a noun.

Word	Noun	Adjective	Verb	Adverb
retractor	Yes	No	No	No
retract	No	No	Yes	No

retractor (noun)	retract (noun)
surgical instrument that holds back the edges of a surgical incision

retractor (verb)	retract (verb)
	formally reject or disavow a formerly held belief, usually under pressure
	pull inward or towards a center
	use a surgical instrument to hold open (the edges of a wound or an organ)
	pull away from a source of disgust or fear