blue story vs laugh

blue story and laugh both are nouns.

Word	Noun	Adjective	Verb	Adverb
blue story	Yes	No	No	No
laugh	Yes	No	Yes	No

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

Other hypernyms of blue story include gag, jape, jest, joke.

blue story (noun)	laugh (noun)
an indelicate joke	the sound of laughing
	a humorous anecdote or remark intended to provoke laughter
	a facial expression characteristic of a person laughing

blue story (verb)	laugh (verb)
	produce laughter