The word "handcolour" refers to the technique of adding colors to a black and white photograph manually. There are several synonyms that can replace this word. One of the most common terms is "hand-tint," which is used to describe the manual addition of color to a photograph. Other synonyms include "colorize," "hand-paint," and "hand-colorize." These terms are often used interchangeably to describe the same technique of adding color to monochrome images. Each term is suitable to use, depending on the context of the conversation or written communication. Nevertheless, they all have the same meaning, which is the process of adding color to black and white images by hand.