A garden trowel is a small handheld tool with a pointed, scoop-shaped metal blade used for digging, planting, and transferring soil, while a garden scoop typically has a wider and flatter shape, often with a curved edge, and is used for scooping and moving larger amounts of soil, compost, or mulch. The main difference between the two is in their design and intended use: trowels are more precise and suited for detailed work, while scoops are better for moving larger quantities of material.