defection vs withdrawal

defection and withdrawal both are nouns.

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

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

defection (noun)	withdrawal (noun)
withdrawing support or help despite allegiance or responsibility	the act of withdrawing
the state of having rejected your religious beliefs for your political party or a cause (often in favor of opposing beliefs or causes)	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	a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation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