vocalise vs vocalisation

vocalise is not a noun while vocalisation is a noun.

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

vocalise (noun)	vocalisation (noun)
	the sound made by the vibration of vocal folds modified by the resonance of the vocal tract

vocalise (verb)	vocalisation (verb)
pronounce as a vowel
express or state clearly
utter with vibrating vocal chords
utter speech sounds
sing (each note a scale or in a melody) with the same vowel