Loop recording is a feature that allows the camera to continue recording video by automatically replacing the oldest files once the memory card is full. This means you don't have to worry about storage space, as the camera will keep recording the most recent footage.
Sport mode, on the other hand, is a feature that optimizes the camera settings for capturing high-motion activities. This includes increasing the frame rate, improving image stabilization for smooth shots, and adjusting the camera's sensitivity for better performance in low-light or high-motion conditions.