smelter vs works

smelter and works both are nouns.

Word	Noun	Adjective	Verb	Adverb
smelter	Yes	No	No	No
works	Yes	No	No	No

As nouns, works is a hypernym of smelter; that is, works is a word with a broader meaning than smelter:

Other hypernyms of smelter include industrial plant, plant.

smelter (noun)	works (noun)
an industrial plant for smelting	performance of moral or religious acts
	the internal mechanism of a device
	buildings for carrying on industrial labor
	everything available; usually preceded by `the'