Hegira vs Hejira

Hegira and Hejira both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hegira	Yes	No	No	No
Hejira	Yes	No	No	No

As nouns, Hegira and Hejira are synonyms defined as:

Hegira and Hejira: the flight of Muhammad from Mecca to Medina in 622 which marked the beginning of the Muslim era; the Muslim calendar begins in that year

Hegira (noun)	Hejira (noun)
the flight of Muhammad from Mecca to Medina in 622 which marked the beginning of the Muslim era; the Muslim calendar begins in that year	the flight of Muhammad from Mecca to Medina in 622 which marked the beginning of the Muslim era; the Muslim calendar begins in that year