minstrel vs vocaliser

minstrel and vocaliser both are nouns.

Word	Noun	Adjective	Verb	Adverb
minstrel	Yes	No	Yes	No
vocaliser	Yes	No	No	No

As nouns, vocaliser is a hypernym of minstrel; that is, vocaliser is a word with a broader meaning than minstrel:

Other hypernyms of minstrel include singer, vocalist, vocalizer.

minstrel (noun)	vocaliser (noun)
a singer of folk songs	a person who sings
a performer in a minstrel show	an organism that can utter vocal sounds

minstrel (verb)	vocaliser (verb)
celebrate by singing, in the style of minstrels