lisper vs verbalizer

lisper and verbalizer both are nouns.

Word	Noun	Adjective	Verb	Adverb
lisper	Yes	No	No	No
verbalizer	Yes	No	No	No

As nouns, verbalizer is a hypernym of lisper; that is, verbalizer is a word with a broader meaning than lisper:

lisper: a speaker who lisps
verbalizer: someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)

Other hypernyms of lisper include speaker, talker, utterer, verbaliser.

lisper (noun)	verbalizer (noun)
a speaker who lisps	someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)