19. Classical Ballet

Classical ballet is a traditional, formal style of ballet which follows the classical ballet technique, it is know by its rigorous  technique and the exact and precise movements. A distinctive feature from ballet is the typical continuos outward rotation of the tights from the hips, this is usually referred as "turnout". In classical ballet there are five foundational leg positions which are used during the turnout, also when presenting jumps they do the ballon which shows the appearance of briefly floating in the air.

18. Contemporary ballet

Contemporary ballet its a style that includes classical ballet and modern ballet. It uses techniques and "pointework" (when the ballet dancer supports all the body weight on the tips of fully extended feet) but the difference is that it allows a great amounts of movement that are not necessarily adhere to the strict body line set by the schools from ballet techniques which are based in classic ballet.
Some of the movements of modern ballet includes floor work, turn-in off the leg and balletic movements.

George Balanchine is considered the first pioneer of contemporary ballet, he used flexed hands, turn in legs, off centered positions and non-classical costumes.

Here is a little fragment of one of Balanchine's choreographies.