last rites vs plural form

last rites and plural form both are nouns.

Word	Noun	Adjective	Verb	Adverb
last rites	Yes	No	No	No
plural form	Yes	No	No	No

last rites (noun)	plural form (noun)
rites performed in connection with a death or burial	the form of a word that is used to denote more than one
a Catholic sacrament; a priest anoints a dying person with oil and prays for salvation