compliments vs plural

compliments and plural both are nouns.

Word	Noun	Adjective	Verb	Adverb
compliments	Yes	No	No	No
plural	Yes	Yes	No	No

compliments (noun)	plural (noun)
(usually plural) a polite expression of desire for someone's welfare	the form of a word that is used to denote more than one

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