treasonist vs traitor

treasonist and traitor both are nouns.

Word	Noun	Adjective	Verb	Adverb
treasonist	Yes	No	No	No
traitor	Yes	No	No	No

As nouns, treasonist and traitor are synonyms defined as:

treasonist and traitor: someone who betrays his country by committing treason

treasonist (noun)	traitor (noun)
someone who betrays his country by committing treason	someone who betrays his country by committing treason
	a person who says one thing and does another