fairy story vs tarradiddle

fairy story and tarradiddle both are nouns.

Word	Noun	Adjective	Verb	Adverb
fairy story	Yes	No	No	No
tarradiddle	Yes	No	No	No

As nouns, tarradiddle is a hypernym of fairy story; that is, tarradiddle is a word with a broader meaning than fairy story:

fairy story: an interesting but highly implausible story; often told as an excuse
tarradiddle: a trivial lie

Other hypernyms of fairy story include fib, story, tale, taradiddle.

fairy story (noun)	tarradiddle (noun)
a story about fairies; told to amuse children	a trivial lie
an interesting but highly implausible story; often told as an excuse	pretentious or silly talk or writing