hostility vs pillaging

hostility and pillaging both are nouns.

Word	Noun	Adjective	Verb	Adverb
hostility	Yes	No	No	No
pillaging	Yes	No	No	No

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

Other hyponyms of hostility include meat grinder, force, violence, pillage, plundering.

hostility (noun)	pillaging (noun)
violent action that is hostile and usually unprovoked	the act of stealing valuable things from a place
a hostile (very unfriendly) disposition
the feeling of a hostile person
a state of deep-seated ill-will