metalworks vs manufactory

metalworks and manufactory both are nouns.

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

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

metalworks: factory where metal castings are produced
manufactory: a plant consisting of one or more buildings with facilities for manufacturing

Other hypernyms of metalworks include factory, manufacturing plant, mill.

metalworks (noun)	manufactory (noun)
factory where metal castings are produced	a plant consisting of one or more buildings with facilities for manufacturing