wendy house vs plaything

wendy house and plaything both are nouns.

Word	Noun	Adjective	Verb	Adverb
wendy house	Yes	No	No	No
plaything	Yes	No	No	No

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

wendy house: plaything consisting of a small model of a house that children can play inside of
plaything: an artifact designed to be played with

Other hypernyms of wendy house include toy.

wendy house (noun)	plaything (noun)
plaything consisting of a small model of a house that children can play inside of	an artifact designed to be played with