plural vs irons

plural and irons both are nouns.

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

plural (noun)	irons (noun)
the form of a word that is used to denote more than one	metal shackles; for hands or legs

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