Tackers are small, sharp nails used for fastening two things together. There are various synonyms for the word tackers, including pins, staples, brads, clips, and nails. While tackers can be used in a variety of contexts, such as in arts and crafts, construction, and upholstery, each synonym may be better suited for a particular task depending on the materials to be fastened. For example, staples are excellent for securing paper or cardboard together, while nails are better suited for woodwork. Regardless of which word is used, all of these synonyms come in different sizes and shapes to accommodate different types of materials and applications.