despoliation vs despoilment

despoliation and despoilment both are nouns.

Word	Noun	Adjective	Verb	Adverb
despoliation	Yes	No	No	No
despoilment	Yes	No	No	No

As nouns, despoliation and despoilment are synonyms defined as:

Other synonyms of despoliation include despoilation, spoil, spoilation, spoliation.

despoliation (noun)	despoilment (noun)
the act of stripping and taking by force	the act of stripping and taking by force