ruiner vs ruin

ruiner and ruin both are nouns.

Word	Noun	Adjective	Verb	Adverb
ruiner	Yes	No	No	No
ruin	Yes	No	Yes	No

ruiner (noun)	ruin (noun)
a person who destroys or ruins or lays waste to	destruction achieved by causing something to be wrecked or ruined
	a ruined building
	an event that results in destruction
	failure that results in a loss of position or reputation
	the process of becoming dilapidated
	an irrecoverable state of devastation and destruction

ruiner (verb)	ruin (verb)
	fall into ruin
	destroy completely; damage irreparably
	reduce to ruins
	deprive of virginity
	reduce to bankruptcy
	destroy or cause to fail