lieder singer vs vocaliser

lieder singer and vocaliser both are nouns.

Word	Noun	Adjective	Verb	Adverb
lieder singer	Yes	No	No	No
vocaliser	Yes	No	No	No

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

Other hypernyms of lieder singer include singer, vocalist, vocalizer.

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