song and dance vs fib

song and dance and fib both are nouns.

Word	Noun	Adjective	Verb	Adverb
song and dance	Yes	No	No	No
fib	Yes	No	Yes	No

As nouns, fib is a hypernym of song and dance; that is, fib is a word with a broader meaning than song and dance:

song and dance: an interesting but highly implausible story; often told as an excuse
fib: a trivial lie

Other hypernyms of song and dance include story, tale, taradiddle, tarradiddle.

song and dance (noun)	fib (noun)
theatrical performance combining singing and dancing	a trivial lie
an interesting but highly implausible story; often told as an excuse

song and dance (verb)	fib (verb)
	tell a relatively insignificant lie