aggression vs pillage

aggression and pillage both are nouns.

Word	Noun	Adjective	Verb	Adverb
aggression	Yes	No	No	No
pillage	Yes	No	Yes	No

As nouns, pillage is a hyponym of aggression; that is, pillage is a word with a more specific, narrower meaning than aggression:

Other hyponyms of aggression include meat grinder, force, violence, pillaging, plundering.

aggression (noun)	pillage (noun)
violent action that is hostile and usually unprovoked	the act of stealing valuable things from a place
deliberately unfriendly behavior	goods or money obtained illegally
the act of initiating hostilities
a disposition to behave aggressively
a feeling of hostility that arouses thoughts of attack

aggression (verb)	pillage (verb)
	steal goods; take as spoils