This is the 6924th most frequent Korean word.
작동
Operation or functioning.
작동 in this sentence is used to describe the action of operating or functioning as attributed to machinery or devices.
이 기계는 자동으로 작동합니다.
This machine operates automatically.
작동 is applied to the state where a device performs its intended function or fails to do so.
기기가 작동하지 않을 때는 전문가를 부르세요.
When the device doesn't function, call a professional.
Here, 작동 refers to the initiation of an operational process or activity typically triggered by an action.