What are the key differences between film grain and digital noise in photography and how do they impact the overall quality of an image?

Film grain and digital noise are both forms of visual imperfections in Photography, but they have distinct characteristics. Film grain is a natural texture that results from the chemical process of developing film, while digital noise is a random pattern of pixels that occurs in digital images. Film grain can add a nostalgic or artistic quality to an image, while digital noise can degrade image quality by reducing sharpness and clarity. Overall, the impact of film grain and digital noise on image quality depends on the photographer's intention and the desired aesthetic effect.