vocalisation vs vocalization

vocalisation and vocalization both are nouns.

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

As nouns, vocalisation and vocalization are synonyms defined as:

vocalisation and vocalization: the sound made by the vibration of vocal folds modified by the resonance of the vocal tract

Other synonyms of vocalisation include phonation, vocalism, voice, vox.

vocalisation (noun)	vocalization (noun)
the sound made by the vibration of vocal folds modified by the resonance of the vocal tract	the sound made by the vibration of vocal folds modified by the resonance of the vocal tract
	the use of uttered sounds for auditory communication