I think that the word “Egypt” comes from the Classical Greek for “Black Land”. The people themselves called themselves the Qm, from which we get the Hebrew “Khem”, as in the “Khemites” or the people of Khem. What the Qm called themselves I don’t know.
Note that “Black Land” refers to the color of the soil, a rich black or dark brown from the sediments left after the floods. The Qm themselves were a white people by and large, with the important ones given a reddish hue in their art. In Mythus Gary decided to make them a red skinned people, though of a different shade from the Atlanteans and the Vargaardians/Amazonians. Just though I’d mention it.