vocalizer vs Simon

vocalizer and Simon both are nouns.

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

vocalizer (noun)	Simon (noun)
a person who sings	United States economist and psychologist who pioneered in the development of cognitive science (1916-2001)
an organism that can utter vocal sounds	United States playwright noted for light comedies (born in 1927)
	United States singer and songwriter (born in 1942)
	one of the twelve Apostles (first century)