Umma vs Islamic Ummah

Umma and Islamic Ummah both are nouns.

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

As nouns, Umma and Islamic Ummah are synonyms defined as:

Umma and Islamic Ummah: the Muslim community or people, considered to extend from Mauritania to Pakistan

Other synonyms of Umma include Islam Nation, Muslim Ummah, Ummah.

Umma (noun)	Islamic Ummah (noun)
the Muslim community or people, considered to extend from Mauritania to Pakistan	the Muslim community or people, considered to extend from Mauritania to Pakistan