yavlyati The visible world of people is called Yav (yave = visible; yavlyati = to appear, to show up) and is the trunk of the World Tree. Yav is everything around us, the material reality in which we live. Here the typical for Slavic way of thinking opposing dualism is clearly seen; here chalange each other life and death, good and evil, happiness and suffering, day and night, light and dark, health and illness, warm and cold. http://www.statemaster.com/encyclopedia/Yav