cock-and-bull story vs fairy tale

cock-and-bull story and fairy tale both are nouns.

Word	Noun	Adjective	Verb	Adverb
cock-and-bull story	Yes	No	No	No
fairy tale	Yes	No	No	No

As nouns, cock-and-bull story and fairy tale are synonyms defined as:

cock-and-bull story and fairy tale: an interesting but highly implausible story; often told as an excuse

Other synonyms of cock-and-bull story include fairy story, fairytale, song and dance.

cock-and-bull story (noun)	fairy tale (noun)
an interesting but highly implausible story; often told as an excuse	a story about fairies; told to amuse children
	an interesting but highly implausible story; often told as an excuse