plural form vs salutation

plural form and salutation both are nouns.

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

plural form (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