When you are looking for a new website, you are often reading or hearing two terms used "Web Design" and "Web Development". It is only natural to assume they are the same thing. They are in fact two different things although very much connected processes. Web Design is primarily the visual aspect of the website, they create the look and feel, branding if required and other graphical components based on the design brief created by the customer and agency.
The graphical design once approved by the customer will then be given to the Web Development team to create the fully functional and public website based on the design created by the Web Designer.