Yaz cultureThe Yaz culture (named after the type site Yaz-Tappe, Yaz Tepe, or Yaz Depe, near Baýramaly, Turkmenistan) was an early Iron Age culture of Margiana, Bactria and Sogdia (1500–500 BC, or 1500–330 BC). It emerges at the top of late Bronze Age sites (BMAC), sometimes as stone towers and sizeable houses associated with irrigation systems. Ceramics were mostly hand-made, but there was increasing use of wheel-thrown ware. There have been found bronze or iron arrowheads, also iron sickles or carpet knives among other artifacts.
VisperadVisperad or Visprad is either a particular Zoroastrian religious ceremony or the name given to a passage collection within the greater Avesta compendium of texts. The Visperad ceremony "consists of the rituals of the Yasna, virtually unchanged, but with a liturgy extended by twenty-three supplementary sections." These supplementary sections (kardag) are then – from a philological perspective – the passages that make up the Visperad collection. The standard abbreviation for Visperad chapter-verse pointers is Vr.
ZendZend or Zand (𐭦𐭭𐭣) is a Zoroastrian technical term for exegetical glosses, paraphrases, commentaries and translations of the Avesta's texts. The term zand is a contraction of the Avestan language word (, meaning "interpretation", or "as understood"). Zand glosses and commentaries exist in several languages, including in the Avestan language itself. These Avestan language exegeses sometimes accompany the original text being commented upon, but are more often elsewhere in the canon.