greeting vs plural

greeting and plural both are nouns.

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

greeting (noun)	plural (noun)
(usually plural) an acknowledgment or expression of good will (especially on meeting)	the form of a word that is used to denote more than one

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