The term 'Ceramic Layer' can be summarized as a job description for a TILER, which is a five-letter word. A TILER is someone who specializes in the installation of ceramic tiles, which are thin, flat pieces of material used to cover surfaces such as walls, floors, and countertops. They use a variety of tools to cut, shape, and install the tiles, and must have a good eye for detail and precision in order to ensure that the tiles are laid correctly.