What is another word for GRAY SCALE?
Pronunciation: [ɡɹˈe͡ɪ skˈe͡ɪl] (IPA) 
Gray scale is a term used in the field of photography, design, and printing to refer to images or colors that are composed entirely of shades of gray. The term is often used interchangeably with other words that describe same or similar color scheme, for instance, monochrome, black and white, tone, and shades. These terms usually refer to images or colors that are composed of different shades or variations of the same base or single color. While gray scale is a term mostly associated with black, white, and gray hues, other terms may imply other colors or hues that are in the same family or range of the color spectrum.
