A dialogue is a conversation in which two or more people take part.
A monologue is a speech in which only one person speaks. In a play this can be where a character speaks aloud his thoughts or...
It is a speech by one orator, such as an address by a politician to a crowd of people. It's contemporary meaning is a dialogue given by a comedian to an audience. Such as what Jay Leno or Conan...
Let the words speak for themselves. Don't try to overact or stylise the words unless it is that type of play. Particularly with Shakespeare monologues it is easy to begin overacting which can be very...