pair of pliers vs plural

pair of pliers and plural both are nouns.

Word	Noun	Adjective	Verb	Adverb
pair of pliers	Yes	No	No	No
plural	Yes	Yes	No	No

pair of pliers (noun)	plural (noun)
a gripping hand tool with two hinged arms and (usually) serrated jaws	the form of a word that is used to denote more than one

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