Muslim Ummah vs Islam Nation

Muslim Ummah and Islam Nation both are nouns.

Word	Noun	Adjective	Verb	Adverb
Muslim Ummah	Yes	No	No	No
Islam Nation	Yes	No	No	No

As nouns, Muslim Ummah and Islam Nation are synonyms defined as:

Muslim Ummah and Islam Nation: the Muslim community or people, considered to extend from Mauritania to Pakistan

Other synonyms of Muslim Ummah include Islamic Ummah, Umma, Ummah.

Muslim Ummah (noun)	Islam Nation (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