FOR YOUR INFROMATION
According to the Arabic dictionary, the word "Muslim" comes from the word "Islam."
The word "Moslem" is inappropriate in both spelling and meaning, as there is a word in Arabic, "mozlum" which means a "wrongdoer" or "oppressor" and does not come from the same root.
Both "Muslim" and "Islam" come from the same root: "S", "L", "M" (silm) -
meaning; "to submit in peace"; "surrender in obedience"; and this immediately implies a relationship between two entities, one being superior to the other or in charge of matters.