wailer vs verbaliser

wailer and verbaliser both are nouns.

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

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

wailer: a mourner who utters long loud high-pitched cries
verbaliser: someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)

Other hypernyms of wailer include griever, lamenter, mourner, sorrower, speaker, talker, utterer, verbalizer.

wailer (noun)	verbaliser (noun)
a mourner who utters long loud high-pitched cries	someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)