mummer vs pantomimer

mummer and pantomimer both are nouns.

Word	Noun	Adjective	Verb	Adverb
mummer	Yes	No	No	No
pantomimer	Yes	No	No	No

As nouns, mummer and pantomimer are synonyms defined as:

mummer and pantomimer: an actor who communicates entirely by gesture and facial expression

Other synonyms of mummer include mime, mimer, pantomimist.

mummer (noun)	pantomimer (noun)
an actor who communicates entirely by gesture and facial expression	an actor who communicates entirely by gesture and facial expression