jumping jack vs plaything

jumping jack and plaything both are nouns.

Word	Noun	Adjective	Verb	Adverb
jumping jack	Yes	No	No	No
plaything	Yes	No	No	No

As nouns, plaything is a hypernym of jumping jack; that is, plaything is a word with a broader meaning than jumping jack:

jumping jack: plaything consisting of a toy figure with movable joints that can be made to dance by pulling strings
plaything: an artifact designed to be played with

Other hypernyms of jumping jack include toy.

jumping jack (noun)	plaything (noun)
plaything consisting of a toy figure with movable joints that can be made to dance by pulling strings	an artifact designed to be played with