Mortar and concrete are both essential construction materials, but they serve different purposes. Mortar is a mixture of cement, sand, and water, and is used to bond bricks, stones, and other masonry materials together. Concrete, on the other hand, is a mixture of cement, sand, gravel, and water, and is used to create a solid, monolithic structure. While both mortar and concrete are made with similar materials, the proportions of these materials differ, resulting in different properties and applications. Mortar is typically used in thin layers, while concrete is used in thicker layers or to create entire structures.