How to treat Cossack?

This paper analyzes the origin of the word "Cossack" from the perspective of etymology. This is actually an ancient Turkic vocabulary, expressed in Cyrillic letters. The word казак can be divided into кай and сак. The former means "light" and the latter means "carrying a bag". So together, it is a "light backpack", which is used to refer to those sentinels in the army who are investigating in front, or vagrants. In fact, the word сакки even has some connection with саки (Serbian/Serbian)-the author thinks that the name of Serbian саки comes from this.

In other words, the oldest "Cossacks" are actually a group of Turkic wandering peoples, who are characterized by strong mobility, no fixed abode and frequent migration. When they migrated from Central Asia to Eastern Europe with wave after wave of national waves, they also brought the word "Cossack" in Turkish to Russia and Ukraine. Since then, the word Cossack has gradually turned (with the disappearance of Turkic peoples in Eastern Europe) to those autonomous groups composed of Slavic fugitive serfs.