defense system vs weaponry

defense system and weaponry both are nouns.

Word	Noun	Adjective	Verb	Adverb
defense system	Yes	No	No	No
weaponry	Yes	No	No	No

As nouns, weaponry is a hypernym of defense system; that is, weaponry is a word with a broader meaning than defense system:

Other hypernyms of defense system include arms, implements of war, munition, weapons system.

defense system (noun)	weaponry (noun)
the weaponry available for the defense of a region	weapons considered collectively