laugh vs cachinnation

laugh and cachinnation both are nouns.

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

As nouns, cachinnation is a hyponym of laugh; that is, cachinnation is a word with a more specific, narrower meaning than laugh:

laugh (noun)	cachinnation (noun)
the sound of laughing	loud convulsive laughter
a humorous anecdote or remark intended to provoke laughter
a facial expression characteristic of a person laughing

laugh (verb)	cachinnation (verb)
produce laughter