"Parts" refer to the individual components that make up a whole object or system. For example, a car has many parts, such as the engine, wheels, and seats. Each part plays a specific role, and together they work to ensure the car functions properly. Understanding these parts helps us appreciate how things work and can guide us in repairs or improvements. In a broader sense, "parts" can also relate to roles in a play or movie. Each actor portrays a specific character, contributing to the overall story. Just like a car, every part is essential for the complete experience, whether it's in a theater or a film.