arsenal vs armament

arsenal and armament both are nouns.

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

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

arsenal (noun)	armament (noun)
a military structure where arms and ammunition and other military equipment are stored and training is given in the use of arms	the act of equipping with weapons in preparation for war
a place where arms are manufactured	weaponry used by military or naval force
all the weapons and equipment that a country has