ruin vs spoil

ruin and spoil both are nouns.

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

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

As verbs, spoil is a hypernym of ruin; that is, spoil is a word with a broader meaning than ruin:

Other hypernyms of ruin include baffle, bilk, cross, foil, frustrate, queer, scotch, thwart.

ruin (noun)	spoil (noun)
destruction achieved by causing something to be wrecked or ruined	the act of stripping and taking by force
a ruined building	the act of spoiling something by causing damage to it
an event that results in destruction	(usually plural) valuables taken by violence (especially in war)
failure that results in a loss of position or reputation
the process of becoming dilapidated
an irrecoverable state of devastation and destruction

ruin (verb)	spoil (verb)
fall into ruin	become unfit for consumption or use
destroy completely; damage irreparably	alter from the original
reduce to ruins	make imperfect
deprive of virginity	destroy and strip of its possession
reduce to bankruptcy	have a strong desire or urge to do something
destroy or cause to fail	hinder or prevent (the efforts, plans, or desires) of
	treat with excessive indulgence
	make a mess of, destroy or ruin