Had you said you knew what it meant, I would have based my next question on your answer. Since you present huge arguments about calling Peter rock, while denying knowledge of the meaning of the word John uses as Peter's cognomen, I must conclude that you are not a good source for knowledge of the things you make lengthy posts about.
After three or more rants and after I answer a question of yours, you say you do not know what the word means, and ask me more questions. I decline to answer them. I do not think this is a straight-ahead exchange.
What is the point of your question about "kepha"shalom b'SHEM Yah'shua HaMashiach