A black-and-white photograph is a style of photography that produces images in shades of gray varying from black to white. Alternative terms for black-and-white photographs include "monochrome," "grayscale," "streamlined," and "duotone." Monochrome photos are images that consist of only one color, typically black, white or shades of gray. Grayscale refers to an image made up entirely of black, white, and gray tones. Streamlined photographs are images that are simple, uncluttered, classic, and highly focused. Lastly, duotone images are a style of black-and-white photography that uses two different colors to create a unique and modern feel. Regardless of the name, black-and-white photography will always remain a timeless and classic art form.