I am an Italian Noahide.
in Mishneh Torah Hilchot-Avodah Zarah 9:4-, Rambam states that Christians are idolaters.
Now, in various editions of the work, including the one available on the Chabad website, unless I am mistaken, the Hebrew expression used by Rambam would be "ovedei kokhavim umazalot". However, I read that, according to the authoritative Yemeni manuscripts of the work, Rambam used the Hebrew expression “ovedei avodah zarah.”
Is what I read correct? And if it is, for what reasons is this textual variant found?