hot pants vs plural

hot pants and plural both are nouns.

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

hot pants (noun)	plural (noun)
skin-tight very short pants worn by young women as an outer garment	the form of a word that is used to denote more than one
a state of sexual arousal

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