prater vs talker

prater and talker both are nouns.

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

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

prater: an obnoxious and foolish and loquacious talker
talker: someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)

Other hypernyms of prater include speaker, utterer, verbaliser, verbalizer.

prater (noun)	talker (noun)
an obnoxious and foolish and loquacious talker	someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)