Here are some other terms used to describe the doer of an action:
* Subject: In grammar, the subject of a sentence is typically the doer of the action. For example, in the sentence "The dog chased the ball," the dog is the subject and the doer of the action.
* Actor: This term is commonly used in literature, drama, and film to refer to the character who performs the action.
* Performer: This term is often used in the context of a performance or a task.
The doer of an action is a key element in understanding the meaning of a sentence or a story.