Ground spices are finely powdered forms of whole spices, which are derived from various parts of plants, including seeds, bark, roots, and fruits. They are commonly used in cooking to enhance flavor, aroma, and color in dishes. Popular ground spices include cumin, coriander, turmeric, and black pepper. These spices are often used in both savory and sweet recipes, making them versatile ingredients in many cuisines around the world. Ground spices can lose their potency over time, so it's best to store them in airtight containers away from light and heat to maintain their flavor and freshness.