1. Electrical. The integrity of an electrical circuit, that everything that is conductive is supposed to be. See continuity checker.
2. Directoral. More in film than live presentations, ensuring that everything in a scene or take matches every other. "Errors in continuity" happen often as multiple takes of a scene are spliced together, and sometimes props, costumes, or makeup are changed or moved slightly and not noticed. Often in a dinner scene, water glasses may appear full, empty, full again depending on the camera angle.
2. Directoral. More in film than live presentations, ensuring that everything in a scene or take matches every other. "Errors in continuity" happen often as multiple takes of a scene are spliced together, and sometimes props, costumes, or makeup are changed or moved slightly and not noticed. Often in a dinner scene, water glasses may appear full, empty, full again depending on the camera angle.