bath salts vs plural

bath salts and plural both are nouns.

Word	Noun	Adjective	Verb	Adverb
bath salts	Yes	No	No	No
plural	Yes	Yes	No	No

bath salts (noun)	plural (noun)
a preparation that softens or scents a bath	the form of a word that is used to denote more than one

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