despoiler vs looter

despoiler and looter both are nouns.

Word	Noun	Adjective	Verb	Adverb
despoiler	Yes	No	No	No
looter	Yes	No	No	No

As nouns, despoiler and looter are synonyms defined as:

Other synonyms of despoiler include freebooter, pillager, plunderer, raider, spoiler.

despoiler (noun)	looter (noun)
someone who takes spoils or plunder (as in war)	someone who takes spoils or plunder (as in war)