workings vs plural

workings and plural both are nouns.

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

workings (noun)	plural (noun)
the internal mechanism of a device	the form of a word that is used to denote more than one
a mine or quarry that is being or has been worked

workings (adjective)	plural (adjective)
	grammatical number category referring to two or more items or units
	composed of more than one member, set, or kind