caroler vs vocalist

caroler and vocalist both are nouns.

Word	Noun	Adjective	Verb	Adverb
caroler	Yes	No	No	No
vocalist	Yes	No	No	No

As nouns, vocalist is a hypernym of caroler; that is, vocalist is a word with a broader meaning than caroler:

Other hypernyms of caroler include singer, vocaliser, vocalizer.

caroler (noun)	vocalist (noun)
a singer of carols	a person who sings