metalworks vs mill

metalworks and mill both are nouns.

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

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

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

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

metalworks (noun)	mill (noun)
factory where metal castings are produced	the act of grinding to a powder or dust
	machinery that processes materials by grinding or crushing
	a plant consisting of one or more buildings with facilities for manufacturing

metalworks (verb)	mill (verb)
	grind with a mill
	produce a ridge around the edge of
	roll out (metal) with a rolling machine
	move about in a confused manner