Vibration mode refers to the specific patterns in which an object oscillates or vibrates when subjected to an external force. Each mode corresponds to a unique frequency at which the object naturally tends to vibrate, influenced by its material properties and shape. For example, a guitar string vibrates in different modes to produce various musical notes. In engineering and physics, understanding vibration modes is crucial for analyzing structures and mechanical systems. By studying these modes, engineers can predict how structures like bridges or buildings will respond to forces such as wind or earthquakes, ensuring safety and stability in designs.