Yarn

Thread is a type of yarn used for sewing. It can be made out of many different materials like cotton, linen, nylon, silk and other materials. Thread is made from a wide variety of materials. Where a thread is stronger than the material that it is being used to join, if seams are placed under strain the material may tear before the thread breaks. Garments are usually sewn with threads of lesser strength than the fabric so that if stressed the seam will break before the garment.