Web development use for developing a website for the Internet. Web development can use for developing a simple single static page to complex web-based applications(web apps), educational sites, social networking services. Web development commonly refers, may include web design, web content development, client-side/server-side scripting, web server, and e-commerce development.
Web development and web design two very different things. Web developers develop functional components like navigation, login signup function, etc. Web designers design how a website will look to users.