coal tongs vs plural

coal tongs and plural both are nouns.

Word	Noun	Adjective	Verb	Adverb
coal tongs	Yes	No	No	No
plural	Yes	Yes	No	No

coal tongs (noun)	plural (noun)
tongs for taking hold of burning coals	the form of a word that is used to denote more than one

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