Fibres are very thin, thread-like strands from which fabrics (or cloths) are made. Some examples of fibres are cotton, wool, silk, etc. The fibres are spun into yarn (long continuous thread) which can then be woven on a loom to make a fabric (or cloth). Yarn is a kind of long, twisted thread. Yarn is made from fibres by the process of spinning.
There are two types of fibres, i.e. natural fibre and man-made fibre (nylon, rayon).
Natural fibres are the fibres which are obtained from natural sources like plants and animals. Some of our clothes are made from yarn derived from the animal fibre. These are the types of natural fibres as they are obtained from nature. Wool and silk fibres are obtained from animals.
Fibres which are prepared by a man using chemicals are called synthetic fibres. These are made by joining small units called monomers into long chains. Examples of synthetic fibres are rayon, nylon, polyester.