fitting vs plural form

fitting and plural form both are nouns.

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

fitting (noun)	plural form (noun)
putting clothes on to see whether they fit	the form of a word that is used to denote more than one
a small and often standardized accessory to a larger system
(usually in the plural) furnishings and equipment (especially for a ship or hotel)
making or becoming suitable; adjusting to circumstances

fitting (adjective)	plural form (adjective)
being precisely fitting and right
in harmony with the spirit of particular persons or occasion