Gesture, action (6)
I believe the answer is:
motion
I believe this is a double definition.
'gesture' is the first definition.
(I know that gesture can be written as motion)
'action' is the second definition.
(I know that motion is a type of change)
(Other definitions for motion that I've seen before include "Proposal for discussion or a vote" , "Old coin of Germany" , "See 14" , "Gesture; formal proposal" , "Formal proposal for debate" .)