What best defines a conversation focused heavily on one speaker's perspective?

A conversation that is heavily focused on one speaker's perspective is best defined as a diatribe. A diatribe is characterized by a prolonged discourse that expresses strong criticism or abuse of an idea, person, or situation, often lacking a balanced exchange of perspectives.

In such conversations, the individual speaking dominates the dialogue, leaving little room for others to share their viewpoints or engage in a reciprocal exchange of ideas. This one-sided nature is essential in distinguishing a diatribe from other forms of communication, where interactions and exchanges are more balanced and inclusive of multiple perspectives.

In contrast, dialogue involves a two-way conversation where each participant actively listens and engages with the other's thoughts, fostering mutual understanding. Debate signifies a structured argument where opposing views are presented and contested, and discourse generally refers to any form of written or spoken communication, which can encompass various styles of interaction, including dialogues and debates.