This is the 3154th most frequent Japanese word.
動く
"動く" means "to move" or "to operate."
Here, '動く' means 'to function or operate,' referring to the clock being in working condition.
時計が動いています。
The clock is moving.
In this sentence, '動く' is used to denote physical movement of the object, in this case, a car.
車が動きました。
The car moved.
Here, '動く' is employed metaphorically to express emotional stirring or being moved.