When it comes to theatre or film, every actor aims to play a significant role in the production. However, a small role can also be crucial in defining the overall picture of a play or movie. There are plenty of synonyms for the term small role, including supporting role, walk-on role, bit part, cameo, and incidental character. A supporting role refers to a character that plays a minor role in the story but supports the protagonist or antagonist in the play. Walk-on role indicates the character that appears on the stage to say a few lines without having much impact on the plot. A bit part or a cameo is a small role but played by a famous actor or actress, typically for the entertainment of the audience. Finally, an incidental character is a fleeting role that doesn't affect the primary plot of the story.