In the following essay we tried to shortly explain the different subcategories or Turkish and their features. We'll analyze Nevai's position and his valued influx on Turkish - specially western Turkish - and Chagatai Turkish - which just like Ottoman Turkish is a fictitious language - and the lingual and literary influences of Nevai - inspired by Farsi language and literature - on Chagatai and  western and specially Ottoman Turkish and the way of Turkish language and literature efflorescence, next to Farsi's advanced literature, and Farsi language and literature and culture next to Turkish language and literature and culture in Nevai's view. Next we'll bring some of the world's most well-known Turkologists views like Köprülüzâde, Sema Barutçu Özönder, Ahmed Bican Ercilasun, Ahmed Caferoğlu, Kemal Araslan and... On the language and literature used in Nevai's work and his influences and futurism. And in the end we'll mention some of the works done on his works.