effacement vs withdrawal

effacement and withdrawal both are nouns.

Word	Noun	Adjective	Verb	Adverb
effacement	Yes	No	No	No
withdrawal	Yes	No	No	No

As nouns, withdrawal is a hypernym of effacement; that is, withdrawal is a word with a broader meaning than effacement:

effacement (noun)	withdrawal (noun)
withdrawing into the background; making yourself inconspicuous	the act of withdrawing
shortening of the uterine cervix and thinning of its walls as it is dilated during labor	formal separation from an alliance or federation
	the termination of drug taking
	the act of taking out money or other capital
	a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation
	the act of withdrawing blood, tumors, etc.
	the act of ceasing to participate in an activity
	a retraction of a previously held position
	avoiding emotional involvement