loneliness vs isolation

loneliness and isolation both are nouns.

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

As nouns, isolation is a hypernym of loneliness; that is, isolation is a word with a broader meaning than loneliness:

loneliness (noun)	isolation (noun)
a disposition toward being alone	the act of isolating something; setting something apart from others
sadness resulting from being forsaken or abandoned	a country's withdrawal from international politics
the state of being alone in solitary isolation	a feeling of being disliked and alone
	(psychiatry) a defense mechanism in which memory of an unacceptable act or impulse is separated from the emotion originally associated with it
	a state of separation between persons or groups