"Zipper" is a commonly used term for a device used to fasten two pieces of fabric or similar material together. However, there are several synonyms for this word that you may be unfamiliar with. One such synonym is "clasp," which can also refer to a fastener for clothing or accessories. Another similar term is "closure," which can refer to any type of fastening that keeps two things together, such as a button or hook-and-loop closure. Some people also use the term "slider" to refer to the moving part of a zipper that opens and closes the teeth. Whether you're looking for a replacement zipper or just expanding your vocabulary, these synonyms can come in handy.