Mahound vs Mahomet

Mahound and Mahomet both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mahound	Yes	No	No	No
Mahomet	Yes	No	No	No

As nouns, Mahound and Mahomet are synonyms defined as:

Mahound and Mahomet: the Arab prophet who, according to Islam, was the last messenger of Allah (570-632)

Other synonyms of Mahound include Mohammad, Mohammed, Muhammad.

Mahound (noun)	Mahomet (noun)
the Arab prophet who, according to Islam, was the last messenger of Allah (570-632)	the Arab prophet who, according to Islam, was the last messenger of Allah (570-632)