vocalizer vs vocalist

vocalizer and vocalist both are nouns.

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

As nouns, vocalizer and vocalist are synonyms defined as:

Other synonyms of vocalizer include singer, vocaliser.

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