factory vs works

factory and works both are nouns.

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

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

factory: a plant consisting of one or more buildings with facilities for manufacturing
works: buildings for carrying on industrial labor

Other hypernyms of factory include industrial plant, plant.

factory (noun)	works (noun)
a plant consisting of one or more buildings with facilities for manufacturing	performance of moral or religious acts
	the internal mechanism of a device
	buildings for carrying on industrial labor
	everything available; usually preceded by `the'