Like any other language, Attire has basic concepts that, once expanded upon, form most of the words and phrases that exist within its boundaries. For Attire, these are concepts that relate to structure, mostly. For example, skirt is a concept as old as we are, and as intrinsic to Attire as anything else might be.
When I speak of essential forms, I mean those proto-Attire ideas that are the beginning point for what we now know and wear, and for all the things that have existed between. They are ideas so primal that they can exist in both draped, and tailored forms with equal ease.
Before we knew about cutting and sewing cloth, we took pieces we had woven, or hides from animals, and wrapped them about our lower bodies. Voila, the skirt is born. And the wrapped skirt is still made, and worn every day, all over the world. From that first cause all other skirts of every variation have their ancestry. The tiniest micro mini, the grandest ball gown skirt, the slinkiest bias cut bandage, the kilt, the sari, and the tutu all come from the baseline idea of covering the lower half of the body, and especially the loins, in a manner that does not separate the legs from one another.