armament vs implements of war

armament and implements of war both are nouns.

Word	Noun	Adjective	Verb	Adverb
armament	Yes	No	No	No
implements of war	Yes	No	No	No

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

Other hypernyms of armament include arms, munition, weaponry, weapons system.

armament (noun)	implements of war (noun)
the act of equipping with weapons in preparation for war	weapons considered collectively
weaponry used by military or naval force