There are two types of yarn spun from wool and they are woolen yarn and worsted yarn. The woolen yarn has longer fibers and is more fuzzy than the worsted yarn. Examples of worsted yarn are tweeds and flannels. Worsted wool have a smoother surface. Gabardine is an example of worsted wool.
Yarn that is made entirely of new wool is labeled “virgin wool”. “Shoddy” wool is made of old woolen garments back into wool fibers and re-spun.