dumb show vs playacting

dumb show and playacting both are nouns.

Word	Noun	Adjective	Verb	Adverb
dumb show	Yes	No	No	No
playacting	Yes	No	No	No

As nouns, playacting is a hypernym of dumb show; that is, playacting is a word with a broader meaning than dumb show:

Other hypernyms of dumb show include acting, performing, playing.

dumb show (noun)	playacting (noun)
a performance using gestures and body movements without words	the performance of a part or role in a drama