What literary term describes a composition in the form of a conversation between two people?

The term that describes a composition in the form of a conversation between two people is "dialogue." Dialogue is a literary device that showcases the exchange of thoughts and ideas between characters, allowing readers to engage with the characters’ interactions and emotions directly. It is crucial in storytelling as it can reveal character traits, advance the plot, and provide insight into the dynamics of relationships.

In contrast, a monologue refers to an extended speech by one character, reflecting their thoughts and feelings without interaction from another character. A narrative is a broader literary term that encompasses the telling of a story, which can include dialogue, but is not limited to conversational exchanges. A prologue is an introductory section of a literary work that sets the stage for the story; it does not involve conversation between characters. Therefore, "dialogue" is the correct term for a composition that takes the form of conversation between two people.