laughter vs vocalization

laughter and vocalization both are nouns.

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

As nouns, vocalization is a hypernym of laughter; that is, vocalization is a word with a broader meaning than laughter:

Other hypernyms of laughter include utterance.

laughter (noun)	vocalization (noun)
the activity of laughing; the manifestation of joy or mirth or scorn	the sound made by the vibration of vocal folds modified by the resonance of the vocal tract
the sound of laughing	the use of uttered sounds for auditory communication