manufacturing plant vs works

manufacturing plant and works both are nouns.

Word	Noun	Adjective	Verb	Adverb
manufacturing plant	Yes	No	No	No
works	Yes	No	No	No

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

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

Other hypernyms of manufacturing plant include industrial plant, plant.

manufacturing plant (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'