Final answer:
In theatre, a play's scenery and costumes fall under scene design and costume design, which contribute to the storytelling by visually creating the play's world.
Step-by-step explanation:
A play's scenery and costumes would be part of its scene design and costume design, respectively. Scene design is an essential component in telling a play's story, defining the location, and creating the world in which the story exists for an audience. It involves the use of detailed backdrops, props, strategic lighting, and sometimes background noise to convey the setting. Likewise, costume design adds another layer of visual storytelling, illustrating the time period, location, and specific characteristics of the characters. Both scene design and costume design work together to create the unified world of the play that serves the story and supports the actors.