plural vs boards

plural and boards both are nouns.

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

plural (noun)	boards (noun)
the form of a word that is used to denote more than one	(used in the plural) the boarding that surrounds an ice hockey rink
	(used in the plural) the stage of a theater

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