No, they are very different!
Fiber is the actual thread from which the material is made and the weave is how you make it.
Traditionally, satin will have both a glossy side and a dull side. It is made using combinations of other fabrics like nylon, rayon, polyester, and even used silk.
Silk fabric is made from a natural fiber produced from silkworms, popularly mulberry silk. Silk has a triangular prism-like structure of the silk fiber, which allows silk cloth to refract incoming light at different angles, thus producing different colors. So silk comes with more strength and silk will have a more shimmery appearance compared to satin’s glossy surface with a dull back. Silk is breathable, comfortable, one of the softest fabrics, and highly prized material.
Silk and satin are both great choices for bedding, but many people prefer silk because:
If you wish to repose in pure luxury, then silk is the way to go. Your hair, skin, and inner natural beauty will thank you for it.
You may also be interested in the following knowledge about silk: