sunk vs ruined

sunk and ruined both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sunk	No	Yes	No	No
ruined	No	Yes	No	No

As adjectives, sunk and ruined are synonyms defined as:

Other synonyms of sunk include done for, undone, washed-up.

sunk (adjective)	ruined (adjective)
doomed to extinction	destroyed physically or morally
	doomed to extinction
	brought to ruin