anrūsa & anrūsīsse

anruusa

anrūsa

cyclic motion, returning motion.

The stem -rÅ«s- generally refers to a cyclical event – a return to a previously held location. This most often applies to celestial objects. It can also refer to non-motion cycles, such as a regular returning to a previous state or quality.

anruusiisse

anrūsīsse

back and forth motion, as in a swinging pendulum or a commute.