What is the difference between a fire pit and a grill?

What is the difference between a fire pit and a grill?
Wood-burning fire pits are usually more portable than charcoal grills. They feature a compact design, allowing you to easily transport them to different areas of your outdoor living space or property. In comparison, most charcoal grills are large, heavy, and difficult to move.

Weathering Steel Fire Pit Grill

Backyard Fire Pit Grill