Yes, most likely. They both come from a word meaning "free folk", and though Cossack and Kazakh communities are very different, they both formed from people tha

Yes, most likely. They both come from a word meaning "free folk", and though Cossack and Kazakh communities are very different, they both formed from people that came from an area controlled by a centralized power to a place where they could live independently and rules by their own law. In general, it is no wonder that the word meaning "free folk" ended up being used for different people - it is a popular concept, United States also calls itself "the Land of the Free" - so if we spoke a Turkish language, Americans might be Cossacks too :)