drug war vs warfare

drug war and warfare both are nouns.

Word	Noun	Adjective	Verb	Adverb
drug war	Yes	No	No	No
warfare	Yes	No	No	No

As nouns, warfare is a hypernym of drug war; that is, warfare is a word with a broader meaning than drug war:

drug war: conflict between law enforcement and those who deal in illegal drugs
warfare: an active struggle between competing entities

Other hypernyms of drug war include war.

drug war (noun)	warfare (noun)
conflict between law enforcement and those who deal in illegal drugs	the waging of armed conflict against an enemy
	an active struggle between competing entities