Islamic Ummah vs plural

Islamic Ummah and plural both are nouns.

Word	Noun	Adjective	Verb	Adverb
Islamic Ummah	Yes	No	No	No
plural	Yes	Yes	No	No

Islamic Ummah (noun)	plural (noun)
the Muslim community or people, considered to extend from Mauritania to Pakistan	the form of a word that is used to denote more than one

Islamic Ummah (adjective)	plural (adjective)
	grammatical number category referring to two or more items or units
	composed of more than one member, set, or kind