arming vs armament

arming and armament both are nouns.

Word	Noun	Adjective	Verb	Adverb
arming	Yes	No	No	No
armament	Yes	No	No	No

As nouns, arming and armament are synonyms defined as:

arming and armament: the act of equipping with weapons in preparation for war

Other synonyms of arming include equipping.

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