Interlinings are an essential component of many types of clothing. These materials are designed to add structure and body to fabrics, making them more substantial and durable. However, there are many different types of interlinings available, each with its own unique properties. Some common synonyms for interlinings include interfacing, underlining, lining, and backing. These terms are often used interchangeably, but they each refer to slightly different materials and applications. Interfacings, for example, are typically used to stabilize a fabric or provide support for specific areas like collars or cuffs. Underlinings, on the other hand, are typically used to provide additional warmth or structure to a garment.