chewing out vs earful

chewing out and earful both are nouns.

Word	Noun	Adjective	Verb	Adverb
chewing out	Yes	No	No	No
earful	Yes	No	No	No

As nouns, chewing out and earful are synonyms defined as:

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

chewing out (noun)	earful (noun)
a severe scolding	a severe scolding
	an outpouring of gossip