Design is a three-dimensional or two-dimensional appearance of the entire product, or of its part, which is determined by its visual characteristics, especially by lines, outlines, colours, shape, texture and materials the product is made from, or decorated through, as well as by their combination.

Product is an industrial or handicrafts item, including also, among others, parts intended to combine within a complex product, product package, graphic symbols and typographic signs, including computer programs.

Complex product is a product made of many parts which could be replaced and which allow assembling and disassembling the product.