interdiction fire vs firing

interdiction fire and firing both are nouns.

Word	Noun	Adjective	Verb	Adverb
interdiction fire	Yes	No	No	No
firing	Yes	No	No	No

As nouns, firing is a hypernym of interdiction fire; that is, firing is a word with a broader meaning than interdiction fire:

interdiction fire: fire directed to an area to prevent the enemy from using that area
firing: the act of firing weapons or artillery at an enemy

Other hypernyms of interdiction fire include fire.

interdiction fire (noun)	firing (noun)
fire directed to an area to prevent the enemy from using that area	the act of setting something on fire
	the termination of someone's employment (leaving them free to depart)
	the act of discharging a gun
	the act of firing weapons or artillery at an enemy