dandle board vs plaything

dandle board and plaything both are nouns.

Word	Noun	Adjective	Verb	Adverb
dandle board	Yes	No	No	No
plaything	Yes	No	No	No

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

dandle board: a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end
plaything: an artifact designed to be played with

Other hypernyms of dandle board include toy.

dandle board (noun)	plaything (noun)
a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end	an artifact designed to be played with