collaborator vs henchman

collaborator and henchman both are nouns.

Word	Noun	Adjective	Verb	Adverb
collaborator	Yes	No	No	No
henchman	Yes	No	No	No

As nouns, collaborator and henchman are synonyms defined as:

Other synonyms of collaborator include confederate, partner in crime.

collaborator (noun)	henchman (noun)
an associate in an activity or endeavor or sphere of common interest	someone who assists in a plot
someone who collaborates with an enemy occupying force
someone who assists in a plot