soundly vs thoroughly

soundly and thoroughly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
soundly	No	No	No	Yes
thoroughly	No	No	No	Yes

As adverbs, soundly and thoroughly are synonyms defined as:

soundly and thoroughly: completely and absolutely (`good' is sometimes used informally for `thoroughly')

Other synonyms of soundly include good.

soundly (adverb)	thoroughly (adverb)
completely and absolutely (`good' is sometimes used informally for `thoroughly')	in an exhaustive manner
deeply or completely	completely and absolutely (`good' is sometimes used informally for `thoroughly')