작업자(A person or process that either starts or participates in an activity. Actors can be either initiators or targets); 행위자(A representation of a role played by an outside object. One physical object, therefore, may be represented by several actors)
a person who plays the role of a character in a performance(Usage notes: In the sense of a person who acts in a play or film, the traditional sense of the word only applied to male actors; the term actress being used for the female counterpart.)