Oil silk is a heavy and durable fabric that is commonly used in home decor and clothing. It is known for its glossy finish and waterproof properties. Some synonyms for oil silk include satin, silk velvet, taffeta, and sateen. Satin is a glossy fabric that is popular for formal attire and luxury linens. Silk velvet is a soft and plush fabric that has a similar sheen to oil silk. Taffeta is a crisp fabric that has a rustling noise and is often used for ballgowns. Sateen is a cotton fabric that has a lustrous finish and is commonly used for bedding and drapery. All of these fabrics can provide a luxurious and sleek look to any project.