plural vs pj's

plural and pj's both are nouns.

Word	Noun	Adjective	Verb	Adverb
plural	Yes	Yes	No	No
pj's	Yes	No	No	No

plural (noun)	pj's (noun)
the form of a word that is used to denote more than one	(usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers

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