metalworks vs armory

metalworks and armory both are nouns.

Word	Noun	Adjective	Verb	Adverb
metalworks	Yes	No	No	No
armory	Yes	No	No	No

As nouns, armory is a hyponym of metalworks; that is, armory is a word with a more specific, narrower meaning than metalworks:

Other hyponyms of metalworks include armoury, arsenal, bell foundry, iron foundry.

metalworks (noun)	armory (noun)
factory where metal castings are produced	a place where arms are manufactured
	a military structure where arms and ammunition and other military equipment are stored and training is given in the use of arms
	all the weapons and equipment that a country has
	a collection of resources