I think these the same Look From the articles of Tengri and Tengrism Tenger literally means sky in Mongolian language and modern Mongolians still pray to Munkh khukh tenger eternal blue sky Therefore Mongolia is called as land of Eternal Blue Sky Munkh khukh tengriin oron in Mongolian And also in modern Turkey Tengriism is sometimes called G ktanr religion by some scholars I ve original wrote it means blue sky in archaic Hungarian with the word kek meaning blue kuk tenger in Mongol k k tangri in Turk and k k tenger in Hungarian all meaning blu sky And the other you just wrote that of z and r Turk speaking for i e Dengiz Tengiz in z speak Tengir in r speking in Hungarian i and e is only a dialectical difference for example feher fehir is the same means white and in these languages the d t g are only phonetical or archaical in some cases for ie g k k k in T rk differences So Dengiz and Gengiz Tengiz Tenger is all the same In phonetics and linguistics these are logical reasoning so undeniable I think so because of these I wrote what I ve written Maybe you can deny or expand it