Fatihah vs Fatiha

Fatihah and Fatiha both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fatihah	Yes	No	No	No
Fatiha	Yes	No	No	No

As nouns, Fatihah and Fatiha are synonyms defined as:

Fatihah and Fatiha: the first or opening sura of the Quran which is the central prayer of Islam and is used on all special occasions as well as during the five daily prayers

Other synonyms of Fatihah include Al-Fatiha.

Fatihah (noun)	Fatiha (noun)
the first or opening sura of the Quran which is the central prayer of Islam and is used on all special occasions as well as during the five daily prayers	the first or opening sura of the Quran which is the central prayer of Islam and is used on all special occasions as well as during the five daily prayers