Formal terms:
* Dramatic monologue: A single speaker addressing a silent listener, often revealing their character and motivations.
* Dialogue: A conversation between two or more characters. This can be within a longer poem or a poem entirely composed of dialogue.
* Dramatic dialogue: Dialogue that is written to be spoken aloud, often with a focus on characterization and interaction.
* Free verse dialogue: Dialogue written without strict adherence to rhyme or meter.
Other terms:
* Conversation: A more casual term for dialogue.
* Voice and counter-voice: A term used to describe the interplay between two or more distinct voices in a poem.
* Interlocution: A formal word for a conversation, often used in literary analysis.
Ultimately, the best term to use depends on the specific poem and the context in which you are discussing it.