Introducing the name of Cyrus the Great (Cyrus or Cyrus?)

The name of Cyrus the Great, the Achaemenid king, is mentioned in the oldest known document, which is the charter of Cyrus the Achaemenid, as "Ko-ra-ash".. Because the text of the charter is in Akkadian script and language (New Babylonian) It can be thought that Cyrus's name was also written in that decree based on its Babylonian sound and pronunciation..

But in some of the inscriptions of Pasargadae which are in ancient Persian script and language, this name is mentioned as "Cyrus / Cyrus".: "Adam / Cyrus / Khashaithiyya / Achaemenid", "I am Cyrus, Achaemenid king". Of course, there are serious questions and doubts about the time of writing these inscriptions. In medieval chronicles, the name of Cyrus is recorded in its Arabic voice, as "Qors / Qorsh"..

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But the interesting and important point that prompted this short note is that it seems that Cyrus had another name.. Strabo quotes that "Cyrus" is the name he took after his reign and was inspired by the river "Kor" in the south of Pasargadae.. He also reports that earlier, Cyrus' name was "Agradatus Agradatus" (اَگـرَداد / اَگـراداد) have been. We know that Agradad is a unified Iranian name and has adopted the suffix "-s" as a Greek pronunciation rule..
Little is known about the meaning of the names Agradad and Cyrus. It may be the name of Agradad, as Jahanshah Derakhshani in "Aryans, Kashi people and other Iranians" (Tehran, 1382) It means "Ahuradad" and may also be associated with "fire", as in some parts of Iran today, fire is performed as "agar".. But the meaning of the word Cyrus or Cyrus, like many other ancient letters in all languages, seems to have been completely lost, and the efforts of some scholars to obtain its meanings and constituent parts have not yet yielded acceptable results..

However, it can be assumed that the jurisprudential term "Ab Kor" is derived from the unknown Iranian origin of the Ker River, and such letters and terms are abundant..