Final answer:
A monologue is when one character delivers a speech to convey his or her thoughts out loud, while thinking to yourself refers to a character's internal thoughts that are not spoken aloud. Monologue is spoken to be heard by others while thinking to yourself is a private internal process.
Step-by-step explanation:
A monologue is when one character delivers a speech to convey his or her thoughts, although other characters may remain on stage in scene. It is a way for a character to express their inner thoughts and feelings out loud. Unlike monologue, thinking to yourself refers to a character's internal thoughts that are not spoken aloud. Monologue is spoken to be heard by others, while thinking to yourself is a private internal process.
For example, in William Shakespeare's play Hamlet, Hamlet delivers a famous monologue known as the 'To be or not to be' soliloquy. In this speech, Hamlet contemplates the meaning of life and the choice between living or ending his own life. This monologue is spoken out loud for other characters and the audience to hear.
In contrast, thinking to yourself would be represented in a play by a character silently pondering their options or reflecting on their thoughts within their own mind, without speaking the thoughts aloud.