Long ago, wool yarns were described as "worsted", or "woolen", or something in-between. A true "worsted" yarn is spun from combed fiber, which is dense and fairly smooth. A true "woolen" yarn, on the other hand, is open, airy, fuzzy, and warm. Its fibers comfortably tangle and spiral down the length of the yarn. The descriptive words not only apply to the yarns, but also to the techniques used to spin them. Worsted spinning is done with a short draw -- a short drafting movement. Woolen...