works vs workings

works and workings both are nouns.

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

As nouns, works and workings are synonyms defined as:

works (noun)	workings (noun)
performance of moral or religious acts	the internal mechanism of a device
the internal mechanism of a device	a mine or quarry that is being or has been worked
buildings for carrying on industrial labor
everything available; usually preceded by `the'