Both Web Designers and Web Developers create websites. A Web Developer focuses more on website programming code, and may work in languages like PHP or JavaScript as well as in HTML and CSS. A Web Designer focuses more on the appearance of the website, and will likely work in WordPress and occasionally use HTML and CSS. There is much overlap between the two roles. The Web Developer is likely to make more money than the Web Designer on average, although a skilled Web Designer may make more money than a Web Developer.