separation vs isolation

separation and isolation both are nouns.

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

As nouns, isolation is a hyponym of separation; that is, isolation is a word with a more specific, narrower meaning than separation:

separation: the social act of separating or parting company
isolation: the act of isolating something; setting something apart from others

As nouns, isolation is a hyponym of separation; that is, isolation is a word with a more specific, narrower meaning than separation:

separation (noun)	isolation (noun)
the social act of separating or parting company	the act of isolating something; setting something apart from others
the act of dividing or disconnecting	a country's withdrawal from international politics
(law) the cessation of cohabitation of man and wife (either by mutual agreement or under a court order)	a feeling of being disliked and alone
sorting one thing from others	(psychiatry) a defense mechanism in which memory of an unacceptable act or impulse is separated from the emotion originally associated with it
the distance between things	a state of separation between persons or groups
coming apart
the termination of employment (by resignation or dismissal)
the space where a division or parting occurs
the state of lacking unity