destruction vs ruin

destruction and ruin both are nouns.

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

As nouns, ruin is a hyponym of destruction; that is, ruin is a word with a more specific, narrower meaning than destruction:

destruction: the termination of something by causing so much damage to it that it cannot be repaired or no longer exists
ruin: destruction achieved by causing something to be wrecked or ruined

As nouns, ruin is a hyponym of destruction; that is, ruin is a word with a more specific, narrower meaning than destruction:

destruction (noun)	ruin (noun)
the termination of something by causing so much damage to it that it cannot be repaired or no longer exists	destruction achieved by causing something to be wrecked or ruined
an event that completely destroys something	a ruined building
a final state	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

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