Avestan language

Avestan ( ) is the liturgical language of Zoroastrianism. It belongs to the Iranian branch of the Indo-European language family and was originally spoken during the Avestan period ( BCE) by the Iranians living in eastern Greater Iran as evidenced from names in Avestan geography.

Angra Mainyu (; ) is the Avestan name of Zoroastrianism's hypostasis of the "destructive/evil spirit" and the main adversary in Zoroastrianism either of the Spenta Mainyu, the "holy/creative spirits/mentality", or directly of Ahura Mazda, the highest deity of Zoroastrianism. The Middle Persian equivalent is Ahriman (; ). The name can appear in English-language works as Ahreman and Ahrimanes.

alphabet mainly used in Zoroastrian scriptures to transcribe the old Avestan language

mythological homeland of the early Iranians

Asha () or arta (; ) is a Zoroastrian concept with a complex and highly nuanced range of meaning. It is commonly summarized in accord with its contextual implications of 'truth' and 'right' (or 'righteousness'), 'order' and 'right working'. It is of cardinal importance to Zoroastrian theology and doctrine. In the moral sphere, aṣ̌a/arta represents what has been called "the decisive confessional concept of Zoroastrianism". The opposite of aṣ̌a is druj ().

thumb|Relief from the Sasanian period with the word Farr written in a calligraphic style of [[Middle Persian]] thumb|Reverse of coin minted during the reign of Huvishka|Shāhanshāh Huvishka of the Greco-Iranian [[Kushan Empire displays the word Farr written in Greek script]]

legendary mountain in Persian mythology

Ancient Iranian title