fib vs fairy tale

fib and fairy tale both are nouns.

Word	Noun	Adjective	Verb	Adverb
fib	Yes	No	Yes	No
fairy tale	Yes	No	No	No

As nouns, fairy tale is a hyponym of fib; that is, fairy tale is a word with a more specific, narrower meaning than fib:

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

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

fib (noun)	fairy tale (noun)
a trivial lie	a story about fairies; told to amuse children
	an interesting but highly implausible story; often told as an excuse

fib (verb)	fairy tale (verb)
tell a relatively insignificant lie