spectacles vs plural

spectacles and plural both are nouns.

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

spectacles (noun)	plural (noun)
(plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision	the form of a word that is used to denote more than one

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