armory vs metalworks

armory and metalworks both are nouns.

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

As nouns, metalworks is a hypernym of armory; that is, metalworks is a word with a broader meaning than armory:

Other hypernyms of armory include foundry.

armory (noun)	metalworks (noun)
a place where arms are manufactured	factory where metal castings are produced
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