vocalize vs vocalizer

vocalize is not a noun while vocalizer is a noun.

Word	Noun	Adjective	Verb	Adverb
vocalize	No	No	Yes	No
vocalizer	Yes	No	No	No

vocalize (noun)	vocalizer (noun)
	a person who sings
	an organism that can utter vocal sounds

vocalize (verb)	vocalizer (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