drenching vs sousing

drenching and sousing both are nouns.

Word	Noun	Adjective	Verb	Adverb
drenching	Yes	No	No	No
sousing	Yes	No	No	No

As nouns, drenching and sousing are synonyms defined as:

Other synonyms of drenching include soaking, souse.

drenching (noun)	sousing (noun)
the act of making something completely wet	the act of making something completely wet