earful vs castigation

earful and castigation both are nouns.

Word	Noun	Adjective	Verb	Adverb
earful	Yes	No	No	No
castigation	Yes	No	No	No

As nouns, earful and castigation are synonyms defined as:

Other synonyms of earful include bawling out, chewing out, dressing down, going-over, upbraiding.

earful (noun)	castigation (noun)
a severe scolding	verbal punishment
an outpouring of gossip	a severe scolding