The two terms are often used interchangeably, but there is a slight difference between the two crafts.
Diamond art is a craft that involves creating designs on a sticky canvas using small, colorful diamonds. The diamonds are placed on the canvas according to a numbered guide, and the final product is a sparkling, three-dimensional work of art.
Diamond painting, on the other hand, is a term used to describe the process of creating a painting using small, colorful diamonds. Unlike diamond art, the diamonds are not placed on a sticky canvas. Instead, they are placed directly on the painting surface. The final product is a beautiful, sparkling painting.