whisperer vs verbaliser

whisperer and verbaliser both are nouns.

Word	Noun	Adjective	Verb	Adverb
whisperer	Yes	No	No	No
verbaliser	Yes	No	No	No

As nouns, verbaliser is a hypernym of whisperer; that is, verbaliser is a word with a broader meaning than whisperer:

whisperer: one who speaks in a whisper
verbaliser: someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)

Other hypernyms of whisperer include speaker, talker, utterer, verbalizer.

whisperer (noun)	verbaliser (noun)
one who speaks in a whisper	someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)