pantomimist vs mimer

pantomimist and mimer both are nouns.

Word	Noun	Adjective	Verb	Adverb
pantomimist	Yes	No	No	No
mimer	Yes	No	No	No

As nouns, pantomimist and mimer are synonyms defined as:

pantomimist and mimer: an actor who communicates entirely by gesture and facial expression

Other synonyms of pantomimist include mime, mummer, pantomimer.

pantomimist (noun)	mimer (noun)
an actor who communicates entirely by gesture and facial expression	an actor who communicates entirely by gesture and facial expression