rotation

An extreme version of vorticity is a vortex. The vortex is a spinning, cyclonic mass of fluid, which can be observed in the rotation of water going down a drain, as well as in smoke rings, tornados and hurricanes.

Earth's moon completes a rotation every twenty-seven days or so.

Applying crop rotation to a field avoids depleting soil nutrients the way repeated use of a single crop might do.

The function mapping (x,y) to (−y,x) is a rotation.

The new single enjoyed heavy rotation on MTV.