A rough drawing is a preliminary, incomplete, or a rudimentary representation of an idea or concept. Other words that may be used in place of rough drawing include sketch, doodle, draft, outline, preliminary drawing, and scrawl. A sketch is a concise, provisional, and rapid drawing of a particular idea or object, while a doodle is usually an impulsive or random drawing made on paper during a conversation or when bored. A draft may refer to a labored, detailed, or progressive drawing or plan. An outline is a brief sketch or summary often used as a guide for a more detailed work. A preliminary drawing is a precursor to a final piece of art, and a scrawl is a rough, hastily written or drawn piece of work.