withdrawal vs separation

withdrawal and separation both are nouns.

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

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

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

withdrawal (noun)	separation (noun)
the act of withdrawing	the social act of separating or parting company
formal separation from an alliance or federation	the act of dividing or disconnecting
the termination of drug taking	(law) the cessation of cohabitation of man and wife (either by mutual agreement or under a court order)
the act of taking out money or other capital	sorting one thing from others
a method of birth control in which coitus is initiated but the penis is deliberately withdrawn before ejaculation	the distance between things
the act of withdrawing blood, tumors, etc.	coming apart
the act of ceasing to participate in an activity	the termination of employment (by resignation or dismissal)
a retraction of a previously held position	the space where a division or parting occurs
avoiding emotional involvement	the state of lacking unity