Etymology and appellation of Khabushan

As it has been brought in this research, the first part of the toponym of Khabushan (Khabush) along with “Keufich” (“Keufichia” in ancient Persian inscription) and “Kofich” (in toponym of Kofijan) are same in the root. Moreover, as a Hypothetical and reconstructed form of “Khofach” and “Khooch” are reconstructable. In pre-Islamic period, all of a sudden, this last form (Khofach or Khooach) converted to Khaooch or Khaboch/Khabosh that the only root of Khabosh has been reminded in Khanoshan (An Arabized form of Khabochan) in Written sources. It seems it has the same root and mean with Hanoch in Habochestan (it is Khuzestan in Pahlavi language). Another sample in sound shift and change (Khofach or Khooach to Khaooach/ Khaaboch or Khabosh) is Sooashon /suvašun / that has been converted to Saooshon /savušun/. Khabushan means High and mountainous land which is hypothetically made Arabic as Khabouchan. The last form in the oldest written sources has been come like Khojan (Khochan), and from the Mongolian period onward, based on written sources has been pronounce as Qochan.