jongleur vs vocalizer

jongleur and vocalizer both are nouns.

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

As nouns, vocalizer is a hypernym of jongleur; that is, vocalizer is a word with a broader meaning than jongleur:

Other hypernyms of jongleur include singer, vocaliser, vocalist.

jongleur (noun)	vocalizer (noun)
a singer of folk songs	a person who sings
	an organism that can utter vocal sounds