ruin vs despoil

ruin is a noun but despoil is not a noun.

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

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

ruin (noun)	despoil (noun)
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

ruin (verb)	despoil (verb)
fall into ruin	destroy and strip of its possession
destroy completely; damage irreparably	steal goods; take as spoils
reduce to ruins
deprive of virginity
reduce to bankruptcy
destroy or cause to fail