plural vs salutation

plural and salutation both are nouns.

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

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

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