In the worsted spinning system, wool (or other fiber) is carded, combed, and drafted before being spun into yarn.
As the wool is combed and drafted, the shorter fibers are removed, and the remaining fibers are brought into alignment with each other.
Worsted-spun yarns are dense and strong. Because of the density, a typical worsted yarn is thinner than a typical woolen yarn of the same ypp.
My Pennsylvania-spun yarns have substantial weight, nice drape, a smooth feel, and good durability. The Maine-spun yarns are lighter and softer.