hajji vs haji

hajji and haji both are nouns.

Word	Noun	Adjective	Verb	Adverb
hajji	Yes	No	No	No
haji	Yes	No	No	No

As nouns, hajji and haji are synonyms defined as:

hajji and haji: an Arabic term of respect for someone who has made the pilgrimage to Mecca

Other synonyms of hajji include hadji.

hajji (noun)	haji (noun)
an Arabic term of respect for someone who has made the pilgrimage to Mecca	an Arabic term of respect for someone who has made the pilgrimage to Mecca
a general term used by foreign soldiers to refer to the Iraqi people