byplay vs shtik

byplay and shtik both are nouns.

Word	Noun	Adjective	Verb	Adverb
byplay	Yes	No	No	No
shtik	Yes	No	No	No

As nouns, shtik is a hyponym of byplay; that is, shtik is a word with a more specific, narrower meaning than byplay:

byplay: incidental activity performed by an actor for dramatic effect
shtik: (Yiddish) a contrived and often used bit of business that a performer uses to steal attention

Other hyponyms of byplay include schtick, schtik, shtick.

byplay (noun)	shtik (noun)
incidental activity performed by an actor for dramatic effect	(Yiddish) a contrived and often used bit of business that a performer uses to steal attention
	(Yiddish) a prank or piece of clowning
	(Yiddish) a devious trick; a bit of cheating
	(Yiddish) a little; a piece