Mold in relief is a type of artwork that involves creating a three-dimensional design by pressing a mold into a flat surface. The term 'mold in relief' is often used interchangeably with the term 'EMBOSS, ' which is the six-letter solution to this crossword puzzle. Embossing is a popular technique used in paper crafting, jewelry making, and other forms of art. It is also used in printing and manufacturing to add texture and dimension to products.