thrush vs vocaliser

thrush and vocaliser both are nouns.

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

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

Other hypernyms of thrush include singer, vocalist, vocalizer.

thrush (noun)	vocaliser (noun)
songbirds characteristically having brownish upper plumage with a spotted breast	a person who sings
a woman who sings popular songs	an organism that can utter vocal sounds
candidiasis of the oral cavity; seen mostly in infants or debilitated adults