Movement

noun

1. Physical motion between points in space.

   "I saw a movement in that grass on the hill."

2. A system or mechanism for transmitting motion of a definite character, or for transforming motion, such as the wheelwork of a watch.
3. The impression of motion in an artwork, painting, novel etc.
4. A trend in various fields or social categories, a group of people with a common ideology who try together to achieve certain general goals

   "The labor movement has been struggling in America since the passage of the Taft-Hartley act in 1947."

5. A large division of a larger composition.