It is in reference to the Oghuz Turks, who migrated from the Altay Mountains[4] to Central Asia in the 8th century and further expanded to the Middle East and to the Balkans as separate tribes.
The Oghuz languages currently spoken have been classified into three categories based on their features and geography: Western, Eastern, and Southern.
Swedish turcologist and linguist Lars Johanson notes that Oghuz languages form a clearly discernible and closely related bloc within the Turkic language family as the cultural and political history of Oghuz Turks has linked them more closely up to the modern age when compared to other Turkic subgroups.
[6] The remarkable similarity between Oghuz languages may be demonstrated through a sentence, which employs a verbal noun in the dative as a link between the main verb and auxiliary.
[7] Turcologist Julian Rentzsch uses this particular sentence in his work titled "Uniformity and diversity in Turkic inceptive constructions":[8] English: ‘The dead man rose, sat down and began to speak.’