whisperer vs talker

whisperer and talker both are nouns.

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

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

whisperer: one who speaks in a whisper
talker: 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, utterer, verbaliser, verbalizer.

whisperer (noun)	talker (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)