Gravel and sand are natural materials commonly used in construction and landscaping. Gravel consists of small, loose stones, while sand is made up of fine particles. Both materials are essential for creating strong foundations, drainage systems, and concrete mixtures. These materials are often sourced from riverbeds, quarries, or beaches. Gravel is typically used for driveways, paths, and as a base for building projects, while sand is crucial for making concrete, mortar, and for use in playgrounds and sports fields. Their versatility makes them vital in various construction applications.