stage business vs playing

stage business and playing both are nouns.

Word	Noun	Adjective	Verb	Adverb
stage business	Yes	No	No	No
playing	Yes	No	No	No

As nouns, playing is a hypernym of stage business; that is, playing is a word with a broader meaning than stage business:

stage business: incidental activity performed by an actor for dramatic effect
playing: the performance of a part or role in a drama

Other hypernyms of stage business include acting, performing, playacting.

stage business (noun)	playing (noun)
incidental activity performed by an actor for dramatic effect	the action of taking part in a game or sport or other recreation
	the act of playing a musical instrument
	the performance of a part or role in a drama