actor's assistant vs dresser

actor's assistant and dresser both are nouns.

Word	Noun	Adjective	Verb	Adverb
actor's assistant	Yes	No	No	No
dresser	Yes	No	No	No

As nouns, actor's assistant and dresser are synonyms defined as:

actor's assistant (noun)	dresser (noun)
a wardrobe assistant for an actor	furniture with drawers for keeping clothes
	a cabinet with shelves
	low table with mirror or mirrors where one sits while dressing or applying makeup
	a wardrobe assistant for an actor
	a person who dresses in a particular way