Yarn is a thread used in handicrafts such as weaving, knitting and crocheting. There are many types, each with its own characteristics and applicable uses. The following are several common yarns and their characteristics and uses:

Cotton Yarn: Cotton yarn is a yarn made from natural cotton fibers. It has the characteristics of softness, good hygroscopicity and strong air permeability. Cotton yarn is suitable for making summer clothing, towels, washcloths, blankets and other household items.

1. Wool yarn is a yarn made of wool fiber. It has good heat retention and is suitable for making winter clothing, scarves, hats and other warm handicrafts.
2. Silk yarn is a yarn made of natural silk or artificial silk. Silk yarn has high gloss and soft and smooth hand feeling, which is suitable for making elegant dresses, scarves, silk scarves and other exquisite handicrafts.
3. Polyester yarn is a kind of synthetic fiber yarn, which has the characteristics of strong durability, good wear resistance, no shrinkage and easy maintenance. It is suitable for making crochet sweaters, scarves, accessories and more.
4. Acrylic yarn is a synthetic fiber yarn with rich colors and good durability. It is suitable for making hand-knitted sweaters, hats, gloves and more.
5. Nylon yarn is a kind of synthetic fiber yarn, which is strong and durable. It is suitable for making outdoor products, sports equipment and so on.
6. Metallic yarns are usually blended with other yarns and contain metallic filaments. It can add a lot of color to handicrafts, suitable for decoration, embroidery and so on.

These are just a few of the common yarn types, there are many others on the market, each with different characteristics and uses. When choosing yarn, you can choose according to the needs of handicrafts, seasonal characteristics, and your own preferences.