plaything vs toy

plaything and toy both are nouns.

Word	Noun	Adjective	Verb	Adverb
plaything	Yes	No	No	No
toy	Yes	No	Yes	No

As nouns, plaything and toy are synonyms defined as:

plaything (noun)	toy (noun)
an artifact designed to be played with	any of several breeds of very small dogs kept purely as pets
	an artifact designed to be played with
	a copy that reproduces a person or thing in greatly reduced size
	a nonfunctional replica of something else (frequently used as a modifier)
	a device regarded as providing amusement

plaything (verb)	toy (verb)
	engage in an activity as if it were a game rather than take it seriously
	manipulate manually or in one's mind or imagination
	behave carelessly or indifferently