役者

1. Origins, structure, and basic meaning

• Structure: 役者(やくしゃ) means a person who performs a role onstage or on screen.
• Basic usage: It describes a young actor playing an elderly person.
  • 若い役者が舞台で老人の役を演じた。

2. Common pitfalls and similar expressions

• Actor and role
  • 役(やく) is the role being played, while 役者 is the person playing it. In 老人の役を演じる, an elderly person is the role's character.