Soliloquy
Soliloquy is a speech meant to be heard by the audience but not by other characters on the stage (as opposed to a monologue which addresses someone who does not respond). In a soliloquy only the audience can-hear the private thoughts of the characters. There are many soliloquies in Shakespearean tragedies. For example we have this famous soliloquy in Hamlet: "To be or not to be" speech. The word is derived from Late Latin soliloquium "a talking to oneself," from Latin solus "alone" + loqui "to speak"