When the focus of specifying and modeling is on how a solution will meet requirements, the output is referred to as a design. According to the BABOK Guide v3, design is the usable representation of a solution. It describes the solution components and how they interact to fulfill business needs. This is distinct from requirements, which describe the "what" rather than the "how." Requirements = What the solution must do Design = How the solution will do it BABOK Reference:
Requirements Analysis and Design Definition knowledge area explains that specifying and modeling can result in either requirements or designs depending on the focus of the activity.