Middle Turkic languages in the context of "Ahmad Yasawi"

Tengri (Old Turkic: 𐰚𐰇𐰚:𐱅𐰭𐰼𐰃, romanized: Kök Teŋri/Teŋiri, lit. 'Blue Heaven'; Old Uyghur: tängri; Middle Turkic: تآنغرِ; Ottoman Turkish: تڭری; Kyrgyz: Теңир; Kazakh: Тәңір; Turkish: Tanrı; Azerbaijani: Tanrı; Bulgarian: Тангра; Proto-Turkic: *teŋri / *taŋrɨ; Mongolian script: ᠲᠩᠷᠢ, T'ngri; Mongolian: Тэнгэр, Tenger; Uyghur: تەڭرى, tengri) is the all-encompassing God of Heaven in the traditional Turkic, Yeniseian, Mongolic, and various other nomadic religious beliefs. Some qualities associated with Tengri as the judge and source of life, and being eternal and supreme, led European and Muslim writers to identify Tengri as a deity of Turkic and Mongolic peoples. According to Mongolian belief, Tengri's will (jayayan) may break its own usual laws and intervene by sending a chosen person to earth.

It is also one of the terms used for the primary chief deity of the early Turkic and Mongolic peoples.

The Oghuz Turks (Middle Turkic: ٱغُز, romanized: Oγuz) were a western Turkic people who spoke the Oghuz branch of the Turkic language family. In the 8th century, they formed a tribal confederation conventionally named the Oghuz Yabgu State in Central Asia. Today, much of the populations of Turkey, Azerbaijan and Turkmenistan are descendants of Oghuz Turks. The term Oghuz was gradually supplanted by the terms Turkmen and Turcoman (Ottoman Turkish: تركمن, romanized: Türkmen or Türkmân) by the 13th century.

The Oghuz confederation migrated westward from the Jeti-su area after a conflict with the Karluk allies of the Uyghurs. In the 9th century, the Oghuz from the Aral steppes drove Pechenegs westward from the Emba and Ural River region. In the 10th century, the Oghuz inhabited the steppe of the rivers Sari-su, Turgai and Emba north of Lake Balkhash in modern-day Kazakhstan.

Karakhanid, also known as Khaqani Turkic (lit. meaning 'imperial' or 'royal', self referring to as 'Türki' or 'Türkçe'), was a Turkic language developed in the 11th century during the Middle Turkic period under the Kara-Khanid Khanate. It has been described as the first literary Islamic Turkic language. It is sometimes classified under the Old Turkic category, rather than Middle Turkic, as it is contemporary to the East Old Turkic languages of Orkhon Turkic and Old Uyghur. Eastern Middle Turkic languages, namely Khorezmian Turkic and later Chagatai are descendants of the Karakhanid language.

Karakhanid vocabulary was influenced by Arabic and Persian loanwords, but the language itself was still noted to be similar to the Old Uyghur language. The language was written using the Arabic script. Mahmud al-Kashgari's Dīwān Lughāt al-Turk and Yūsuf Balasaguni's Kutadgu Bilig are considered to be important literary works written in Karakhanid language.

The Karluk or Qarluq languages are a sub-branch of the Turkic language family that developed from the varieties spoken by Karluks. By far the largest languages of this branch are Uzbek and Uyghur.

Many Middle Turkic works were written in these languages. The language of the Kara-Khanid Khanate was known as Turki, Ferghani, Kashgari or Khaqani. The language of the Chagatai Khanate was the Chagatai language.

The Oghuz Turks (Middle Turkic: ٱغُز, romanized: Oγuz) were a western Turkic people who spoke the Oghuz branch of the Turkic language family. In the 8th century, they formed a tribal confederation conventionally named the Oghuz Yabgu State in Central Asia. Today the Turkmen are descendants of Oghuz Turks, while much of the populations of Turkey, Azerbaijan and Turkmenistan are speaking Oghuz languages. The term Oghuz was gradually supplanted by the terms Turkmen and Turcoman (Ottoman Turkish: تركمن, romanized: Türkmen or Türkmân) by the 13th century.

The Oghuz confederation migrated westward from the Jeti-su area after a conflict with the Karluk allies of the Uyghurs. In the 9th century, the Oghuz from the Aral steppes drove Pechenegs westward from the Emba and Ural River region. In the 10th century, the Oghuz inhabited the steppe of the rivers Sari-su, Turgai and Emba north of Lake Balkhash in modern-day Kazakhstan.