A monologue is a speech or presentation given by a single person. It is often used in plays, movies, or public speaking, where one character or speaker expresses their thoughts, feelings, or ideas without interruption. Monologues can be directed at an audience or another character, but they do not involve a back-and-forth exchange.
On the other hand, a dialogue is a conversation between two or more people. It involves an exchange of ideas, thoughts, or information, where each participant responds to the other. Dialogues are common in everyday conversations, as well as in literature, theater, and film, where characters interact with each other.
In summary, the main difference between a monologue and a dialogue is that a monologue is a one-sided speech, while a dialogue involves a two-way conversation.