What is another name for the range of motion in your joints

Movement or flexibility

Explanation: Healthy body that should stay free of injuries as long as possible, flexibility plays and important part in that. Flexibility is the absolute RANGE of movement in a join or a series of joints and lengthen muscles that cross the joints to induce a bending movement or motion. Flexibility is mostly trained with passive stretches, working with exercise which move your joints actively improves flexibility and strengthens you at the same time  

c. explains words’ origins and variations.

a) madame podtochina used witchcraft to make it disappear.