Kip:  A gymnastics bar skill move designed to move from a glide or hang on the bars to a support position.  It is done on high bar, unevens and the parallel bars.  The skill is uses transfer of momentum and is done by swinging or gliding (to a fully extended position), bringing the toes to the bar, jamming up the leg and pulling with straight arms up to a front support position.  This is a basic bar skill and is first used in the USA Gymnastics compulsory at Level 5.

Korbut:  This is an uneven bar skill created by Russian gymnast Olga Korbut. It consists of a backwards flip from a stand on the high bar to a re-catch of the high bar.  Gymnasts no longer do either release moves or dismounts from a stand on the bars.

Gymnastics Dictionary