motion that continues indefinitely without any external source of energy; impossible in practice because of friction | a change of position that does not entail a change of location |
| the act of changing location from one place to another |
| the use of movements (especially of the hands) to communicate familiar or prearranged signals |
| a formal proposal for action made to a deliberative assembly for discussion and vote |
| a natural event that involves a change in the position or location of something |
| an optical illusion of motion produced by viewing a rapid succession of still pictures of a moving object |
| a state of change |