I studied that Kmt means "the black one" (fem.), refering to the colour of the land of Egypt. As for "end", it can be written in many ways, p.e. r Dr.f (to his limit).
Egyptian and Arabic have similarities, as both have the same origin (one semithic and one camithic), but they are not the same.
True, Kemet (spelt without the vowels=Kmt) is in reference to the land that is always evolving. And why seasons were very important that they indicated changed being a evolving process that the land endures on a continueous basis, never ending, always evolving. Have in thought that at one time the area it self was consider the center of all existance, which could explain Ra's self centerness.
l (higher consciousness)
l (conscious/mudane realm)
is another form of "end" too, that consist of the earth's sphere of inspired/intelligent thought/idea being the "seat of intelligence" represented in female form as Isis whom is also known to have been the representation of the land.
Explaining the cross over of the maternal culture coming to an "end" with Arabic's "beginning" being the patriarchal hiearchy that is in existance. Having the maternal hiearchy to evolve in accomplishing the status to where once woman/women were greater than man/men...well...with the exception of Only One/Amen/Aten/Allaah whom is always greater than both sexes whom are similar with one another, but are not the same.