collaboration vs quislingism

collaboration and quislingism both are nouns.

Word	Noun	Adjective	Verb	Adverb
collaboration	Yes	No	No	No
quislingism	Yes	No	No	No

As nouns, collaboration and quislingism are synonyms defined as:

collaboration and quislingism: act of cooperating traitorously with an enemy that is occupying your country

Other synonyms of collaboration include collaborationism.

collaboration (noun)	quislingism (noun)
act of working jointly	act of cooperating traitorously with an enemy that is occupying your country
act of cooperating traitorously with an enemy that is occupying your country