isolation vs insularism

isolation and insularism both are nouns.

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

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

isolation (noun)	insularism (noun)
the act of isolating something; setting something apart from others	the state of being isolated or detached
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