Uzbeks & Uyghurs: differencies & similarities

I am not sure if this topic was discussed before in the forum, just i decided to share some information on reasons for that uzbeks & uyghurs  have many traditionals common for both of these two nations. Not just language, also musical instruments and dances are very the same. I don't know if uyghurs have traditional food - POLOV, or somsa, kulcha non . I know it sounds funny but damn it's really interesting !
Maybe there are some other nations common with the uzbek-uyghur traditions???