The dominant device used in drama is dialogue. Dialogue is the conversation between characters that moves the plot forward and reveals their personalities, motivations, and conflicts. It is the most common and essential device used in drama as it helps to create tension, build relationships, and convey the story to the audience. Stage directions are important too, as they provide information about the setting, character movements, and actions. Characterisation is also crucial as it helps to create believable and relatable characters that the audience can connect with. Soliloquy, on the other hand, is a device used to reveal a character's inner thoughts and feelings to the audience, but it is not as commonly used as dialogue.