Interior design is the art and science of enhancing the interior of a building or space to achieve a healthier and more aesthetically pleasing environment for the people using the space. It involves the use of design principles, color theory, and a range of technical skills to create a functional and visually appealing space.

The goal of interior design is to create a space that is both functional and attractive, while also reflecting the personality and preferences of the occupants. This may involve the selection of furnishings, wall and floor coverings, lighting, and other decorative elements, as well as the arrangement of these items within the space.

"Interior design can be applied to a wide range of spaces, from residential homes and apartments to commercial buildings, hotels, and public spaces. Interior designers often work closely with architects and builders to ensure that the design of the space is both aesthetically pleasing and practical, and that it meets the needs of the occupants. They may also work with other professionals, such as contractors and suppliers, to select and install materials and furnishings."