armament vs arming

armament and arming both are nouns.

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

As nouns, armament and arming are synonyms defined as:

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

Other synonyms of armament include equipping.

armament (noun)	arming (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