In every world there are different kinds of clothing (התלבשות, hitlabshut), states (מצבים, matzavim), coupling (זיווגים, zivugim), ascents (עליות, aliyot) and descents (ירידות, yeridot), depending on the nature and purpose of the world in question. The number of lights in the different worlds does not correspond directly to the number of the Ten Sefirot. Rather, each has its own particular number of lights, the sum being bound up with the nature of the given tree.
Even the Name of HaVaYaH, blessed be He, gives rise to seventy trees that are all completely different from one another: these are seventy “date palms”. (The word תמר, tamar, a date palm, has the connotation of תמורה, temurah, signifying exchange or substitution of letters or numbers.) However, the order of the Ten Sefirot in the form of the worlds of Atzilut, Beriyah, Yetzirah and Asiyah is called only one tree, as we will discuss further, with the help of God.