pillage vs aggression

pillage and aggression both are nouns.

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

As nouns, aggression is a hypernym of pillage; that is, aggression is a word with a broader meaning than pillage:

Other hypernyms of pillage include hostility.

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

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