An excavator is a heavy construction machine used for digging, lifting, and moving materials. It typically consists of a large arm, known as a boom, which is attached to a rotating platform called the house. The house sits on a set of tracks or wheels, allowing the excavator to move around a job site easily. Excavators are commonly used in various applications, including construction, mining, and demolition. They can be equipped with different attachments, such as buckets, hammers, or grapples, to perform specific tasks. Their versatility and power make them essential for many large-scale projects.