The definition of drama is
            that it is a literary work that is intended to be presented on a stage or--in
            contemporary times--in a film by actors to an audience and that has characters who are
            in some sort of conflict that involves some sort of action and a crisis with a
            resolution all occurring within a specified atmosphere. The conflict may be physical
            action, as in Shakespeare's Henry the IV, or mental action, as in
            John Osborne's Look Back in Anger, where they essentially debated
            philosophical and moral issues. A crisis arises that is in keeping with the kind of
            action presented and that must be resolved by the end of the drama. There are
            subcategories under the main category of drama: there are comedies, tragedies and
            tragicomdies, with further subdivisions such as farce and satire or comedies of manners
            and melodrama.
It seems a little more difficult to identify the
            "nature of drama" as some would say its nature is identified by its definition. In other
            words, some may say the nature of drama is that it is a literary form presented by
            actors, as opposed to a form presented between the covers of a book, that presents
            action that leads to a crisis that is resolved (or not in absurdism). Perhaps, though a
            bit more detail can be identified that might elaborate upon the nature of
            drama.
The applicable definition of
            nature in this usage is that the
            nature of a thing is its essential parts; its peculiar
            qualities. By this definition, the most distinguishing essential part is that
            already mentioned: actors who stage the story for the audience to see in company with a
            larger group of people that replace pages that contain the story for the audience to
            privately read. Another essential part to distinguish drama from other literary forms is
            that character's personas and dialogue and actions must provide the sole information
            about the drama--unless there is scripted a narratorial character who comments upon the
            other actors' action and dialogue, as in Thorton Wilder's Our Town
            and Williams' The Glass Menagerie. Therefore, the essential nature
            of drama is to present the action, conflict, crisis and resolution of a story through
            character actors before a group comprising the audience in a public forum where mental
            and emotional (sometimes physical) reactions are a collective
            experience.
