disengagement vs separation

disengagement and separation both are nouns.

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

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

disengagement (noun)	separation (noun)
to break off a military action with an enemy	the social act of separating or parting company
the act of releasing from an attachment or connection	the act of dividing or disconnecting
	(law) the cessation of cohabitation of man and wife (either by mutual agreement or under a court order)
	sorting one thing from others
	the distance between things
	coming apart
	the termination of employment (by resignation or dismissal)
	the space where a division or parting occurs
	the state of lacking unity