sidesplitter vs laugh

sidesplitter and laugh both are nouns.

Word	Noun	Adjective	Verb	Adverb
sidesplitter	Yes	No	No	No
laugh	Yes	No	Yes	No

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

Other hypernyms of sidesplitter include gag, jape, jest, joke.

sidesplitter (noun)	laugh (noun)
a joke that seems extremely funny	the sound of laughing
	a humorous anecdote or remark intended to provoke laughter
	a facial expression characteristic of a person laughing

sidesplitter (verb)	laugh (verb)
	produce laughter