isolation vs defence reaction

isolation and defence reaction both are nouns.

Word	Noun	Adjective	Verb	Adverb
isolation	Yes	No	No	No
defence reaction	Yes	No	No	No

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

isolation: (psychiatry) a defense mechanism in which memory of an unacceptable act or impulse is separated from the emotion originally associated with it
defence reaction: (psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires

Other hypernyms of isolation include defence, defence mechanism, defense, defense mechanism, defense reaction.

isolation (noun)	defence reaction (noun)
the act of isolating something; setting something apart from others	(psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires
a country's withdrawal from international politics
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