plural vs swimming trunks

plural and swimming trunks both are nouns.

Word	Noun	Adjective	Verb	Adverb
plural	Yes	Yes	No	No
swimming trunks	Yes	No	No	No

plural (noun)	swimming trunks (noun)
the form of a word that is used to denote more than one	swimsuit worn by men while swimming

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