What is the difference between noise and grain in photography and how can they affect the quality of an image?

Noise in Photography refers to random variations in brightness or color that can distort the image, often caused by shooting in low light or using a high ISO setting. Grain, on the other hand, refers to a film-like texture that can appear in digital images, typically caused by using a high ISO setting or aggressive editing. Both noise and grain can reduce the overall quality of an image by making it appear less sharp and clear, and can also impact the overall aesthetic of the photo.