Vocalizations play a crucial role in lion communication during group movements or hunts as they help coordinate the actions of the pride members, maintain group cohesion, and communicate information about the location of other pride members, the progress of the hunt, and potential threats in the environment. Lions use a variety of vocalizations such as roars, growls, grunts, and moans to signal different messages to one another, ensuring effective communication within the pride and enhancing their chances of successful cooperation during group activities.