plural vs sunglasses

plural and sunglasses both are nouns.

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

plural (noun)	sunglasses (noun)
the form of a word that is used to denote more than one	(plural) spectacles that are darkened or polarized to protect the eyes from the glare of the sun

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