As nouns the difference between shako and shaka

is that shako is a stiff, cylindrical military dress hat with a metal plate in front, a short visor, and a plume while shaka is a greeting gesture in which the thumb and little finger are extended while curling the three middle fingers in a semi-fist used to express a variety of positive meanings including "all right", "hello" and "goodbye" or shaka can be a joke, prank.