<human>: What is the difference between an electric and a cordless drill?
<bot>: The main difference between an electric and a cordless drill is that an electric drill requires an external power source, such as a wall socket or battery pack, while a cordless drill uses its own internal batteries to power itself. An electric drill can also be heavier than a cordless drill due to the need for a motor and other components. Additionally, electric drills are typically more expensive than cordless drills.