Simon vs vocalizer

Simon and vocalizer both are nouns.

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

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