deviationist vs defector

deviationist and defector both are nouns.

Word	Noun	Adjective	Verb	Adverb
deviationist	Yes	No	No	No
defector	Yes	No	No	No

As nouns, defector is a hypernym of deviationist; that is, defector is a word with a broader meaning than deviationist:

deviationist: an ideological defector from the party line (especially from orthodox communism)
defector: a person who abandons their duty (as on a military post)

Other hypernyms of deviationist include deserter.

deviationist (noun)	defector (noun)
an ideological defector from the party line (especially from orthodox communism)	a person who abandons their duty (as on a military post)