asker vs verbalizer

asker and verbalizer both are nouns.

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

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

asker: someone who asks a question
verbalizer: someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)

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

asker (noun)	verbalizer (noun)
someone who asks a question	someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)