laughter vs laugh

laughter and laugh both are nouns.

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

As nouns, laughter and laugh are synonyms defined as:

laughter (noun)	laugh (noun)
the activity of laughing; the manifestation of joy or mirth or scorn	the sound of laughing
the sound of laughing	a humorous anecdote or remark intended to provoke laughter
	a facial expression characteristic of a person laughing

laughter (verb)	laugh (verb)
	produce laughter