foodstuff vs plural form

foodstuff and plural form both are nouns.

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

foodstuff (noun)	plural form (noun)
(usually plural) consumer goods sold by a grocer	the form of a word that is used to denote more than one
a substance that can be used or prepared for use as food