Blue–green distinction in language being described. For example, "blue" and "green" might be distinguished, but a single term might be used for both if the color is dark. Furthermore, green might be associated with yellow, and blue with black or gray. According to Brent Berlin and Paul Kay's 1969 study "", distinct terms for brown, purple, pink, orange and grey will not emerge in a language until the language has made a distinction between green and blue. In their account of the development of color terms the first terms to emerge are those for white/black (or light/dark), red and green/yellow. The word for blue
Blue–green distinction in language plant hues, and grey (like the sea); other shades of green would be referred to in Modern Irish as "uaine" or "uaithne", while "liath" is grey proper (like a stone). Scottish Gaelic uses the term "uaine" for "green". However, the dividing line between it and "gorm" is somewhat different than between the English "green" and "blue", with "uaine" signifying a light green or yellow-green, and "gorm" extending from dark blue (what in English might be navy blue) to include the dark green or blue-green of vegetation. Grass, for instance, is "gorm", rather than "uaine". In addition, "liath" covers a range