Web design typically refers to the process of designing a web site or web page layout and often includes the graphical elements on a page. The design can be developed using a graphics program such as Adobe Photoshop, and provides the framework for the look and feel of a web page.
The finished product of the design does not typically contain code. Rather, the graphical representation of the web page is used by another or the same party as the basis for the code. The representation is divided into areas that can be represented by web code, and other areas that are purely graphics.
Web development is typically used to described the programming required to construct the “back end” of a website. The back end is the area of the site that isn’t seen by visitors, but which does the work required in order to present the right information in the correct format to the visitors.