dressing down vs castigation

dressing down and castigation both are nouns.

Word	Noun	Adjective	Verb	Adverb
dressing down	Yes	No	No	No
castigation	Yes	No	No	No

As nouns, dressing down and castigation are synonyms defined as:

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

dressing down (noun)	castigation (noun)
a severe scolding	verbal punishment
	a severe scolding