ruin vs devastation

ruin and devastation both are nouns.

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

As nouns, devastation is a hypernym of ruin; that is, devastation is a word with a broader meaning than ruin:

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

Other hypernyms of ruin include destruction.

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

Other hyponyms of ruin include desolation, shipwreck.

As nouns, devastation is a hypernym of ruin; that is, devastation is a word with a broader meaning than ruin:

Other hypernyms of ruin include desolation.

ruin (noun)	devastation (noun)
destruction achieved by causing something to be wrecked or ruined	the termination of something by causing so much damage to it that it cannot be repaired or no longer exists
a ruined building	plundering with excessive damage and destruction
an event that results in destruction	an event that results in total destruction
failure that results in a loss of position or reputation	the feeling of being confounded or overwhelmed
the process of becoming dilapidated	the state of being decayed or destroyed
an irrecoverable state of devastation and destruction

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