Small roles, also known as minor roles or supporting roles, are secondary characters in a play, movie, or TV show who have lesser screen time and impact on the narrative compared to the lead roles. Other synonyms for small roles include bit parts, walk-on parts, cameo roles, extras, and background actors. Bit parts are small and often uncredited roles in movies or TV shows. Walk-on parts are brief appearances by an actor without any dialogue. Cameo roles are brief appearances by famous actors. Extras are actors who appear in the background or in crowd scenes. Background actors, also known as background extras or extras, are actors who help create a realistic atmosphere.