punch pliers vs plural

punch pliers and plural both are nouns.

Word	Noun	Adjective	Verb	Adverb
punch pliers	Yes	No	No	No
plural	Yes	Yes	No	No

punch pliers (noun)	plural (noun)
punch consisting of pliers for perforating paper or leather	the form of a word that is used to denote more than one

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