balladeer vs vocaliser

balladeer and vocaliser both are nouns.

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

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

Other hypernyms of balladeer include singer, vocalist, vocalizer.

balladeer (noun)	vocaliser (noun)
a singer of popular ballads	a person who sings
	an organism that can utter vocal sounds