salutation vs plural form

salutation and plural form both are nouns.

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

salutation (noun)	plural form (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
an act of honor or courteous recognition
word of greeting used to begin a letter