Hook eyes are small metal fasteners that are used to fasten garments or other items together. Hook eyes are also commonly known as hook-and-eye closures, or simply as hooks. There are several synonyms for the term hook eyes, including hook-and-loop fasteners, zippers, buttons, snaps, and clasps. These alternative fastening options offer different levels of security and ease of use, and may be preferred for different types of clothing or accessories. For example, zippers are often used on jackets and pants, while buttons may be more suitable for shirts and blouses. Ultimately, the choice of fastener will depend on the style and function of the item being secured.