plural vs bikini pants

plural and bikini pants both are nouns.

Word	Noun	Adjective	Verb	Adverb
plural	Yes	Yes	No	No
bikini pants	Yes	No	No	No

plural (noun)	bikini pants (noun)
the form of a word that is used to denote more than one	(used in the plural) small and tight-fitting underpants; worn by women

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