Silk is a natural protein fibre which can be woven into different types of textiles including silk chiffon, silk crepe, silk shantong, silk habotai, and silk charmeuse/satin. In other words, charmeuse and satin are specific types of weaves.
No one uses silk chiffon to make silk beddings since it is so flimsy and light weight. Most people use silk habotai and silk charmeuse to make silk bedding. Habotai silk is a lighter weight silk that is only about 15 momme, decent enough to make silk bedding, but it will not last for a long time. Also, habotai weave does not have a smooth silky surface like charmeuse. The preferred and more luxurious choice of silk for bedding is charmeuse weave silk.
Charmeuse weave and satin weave are essentially the same tight, heavy weight weave with a glossy surface and a dull back. We use the word charmeuse instead of the word satin because satin or “sateen” has been “hijacked” by polyester manufacturers who use polyester fibers in a satin weave to create the illusion of silk, and then incorrectly call it satin. The correct thing to do is to call it “polyester satin” not just satin since satin describes only the weave, not the fiber content. Our silk beddings are made from top grade 100% silk, in charmeuse weave. Charmeuse silk is so beautiful that top designers use it to make couture gowns for celebrities to wear on the red carpet.