An important distinction must be established between color and shape, these two attributes usually are used in conjunction with one another when describing in language. For example, being labeled as alternative parts of basic management terms pdf terms color term and shape term. There are many different dimensions by which color varies.
English refers to moderately high brightness with strong color saturation. Some phenomena are due to related optical effects, but may or may not be described separately from the color name. Similarly, languages are selective when deciding which hues are split into different colors on the basis of how light or dark they are. To English speakers, these pairs of colors, which are objectively no more different from one another than light green and dark green, are conceived of as belonging to different categories. English speakers would simply call dark and light blue. Herero color category, compared to people whose language separates the colors into two different color categories.
This distinction is made even if two shades are identical. Berlin and Kay based their analysis on a comparison of color words in 20 languages from around the world. Stage I only covers two terms white and black however these terms are referenced broadly to describe other undefined color terms. For example, the Jale highland group in New Guinea identify the color of blood as black. This is because at this stage I, white and black, are associated with which objects closer associates to the degree of brightness from which it has. With stage II the recognition of another term red is developed.