panel

The word "panel" has several meanings, many of them linked to the idea of a flat section or something brought together as one unit. At its most basic, a panel is a thin, flat part of something, such as a wooden panel in furniture, a glass panel in a window, or the surface of a solar panel that captures sunlight. In art and comics, a panel is also one separate picture or frame in a comic strip. "The artist used decorative panels to brighten up the room."

However, "panel" also commonly means a group of people chosen for discussion, investigation, or decision-making. A panel of experts might speak at a conference, and a jury panel may be called as part of the court process. These groups are usually selected because they bring certain knowledge, experience, or viewpoints. "The television show featured a panel of political analysts."

In technical contexts, especially in aviation and electronics, a panel is a surface that holds instruments and controls. An airplane's instrument panel is where the pilot checks flight information, while an electrical panel helps distribute power throughout a building. "The mechanic checked the wiring behind the control panel."

So, whether it refers to a physical part, a comic frame, a group of people, or a set of controls, "panel" usually suggests either a flat section or a group brought together for a specific purpose.