A handheld drill, also known as a power drill or cordless drill, is a versatile and convenient tool for both professional and DIY projects. Some common synonyms for handheld drill include electric drill, battery-powered drill, corded drill, and portable drill. Other variations of this tool include hammer drills, impact drills, and rotary drills. Depending on the type of drill bit used, a handheld drill can be used for drilling holes in wood, metal, or concrete, as well as driving screws and bolts. While the functionality of all these tools may vary, they all share the same basic principle of using rotation to create holes or drive fasteners.