spoil vs despoil

spoil is a noun but despoil is not a noun.

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

As verbs, spoil and despoil are synonyms defined as:

Other synonyms of spoil include plunder, rape, violate.

spoil (noun)	despoil (noun)
the act of stripping and taking by force
the act of spoiling something by causing damage to it
(usually plural) valuables taken by violence (especially in war)

spoil (verb)	despoil (verb)
become unfit for consumption or use	destroy and strip of its possession
alter from the original	steal goods; take as spoils
make imperfect
destroy and strip of its possession
have a strong desire or urge to do something
hinder or prevent (the efforts, plans, or desires) of
treat with excessive indulgence
make a mess of, destroy or ruin