Blue–green distinction in language describe certain vegetables, apples, and vegetation. "Ao" is also the word used to refer to the color on a traffic light that signals one to "go". However, most other objects—a green car, a green sweater, and so forth—will generally be called "midori". Japanese people also sometimes use the word , based on the English word "green", for colors. The language also has several other words meaning specific shades of green and blue. The native Korean words (Revised Romanization: "pureu-da") or 파랗다 (parah-ta) may mean either blue or green, or bluish green. These adjectives and 파랗다 are used for blue as
Green green pigment in green eyes; like the color of blue eyes, it is an optical illusion; its appearance is caused by the combination of an amber or light brown pigmentation of the stroma, given by a low or moderate concentration of melanin, with the blue tone imparted by the Rayleigh scattering of the reflected light. Green eyes are most common in Northern and Central Europe. They can also be found in Southern Europe, West Asia, Central Asia, and South Asia. In Iceland, 89% of women and 87% of men have either blue or green eye color. A study of Icelandic