Markup and styling languages are essential tools used in web development to structure and present content. A markup language, such as HTML, defines the elements of a webpage, like headings, paragraphs, and links, by using tags. These tags help browsers understand how to display the content to users. On the other hand, styling languages, like CSS, are used to control the appearance of the content defined by markup languages. CSS allows developers to apply styles such as colors, fonts, and layouts, enhancing the visual appeal of a webpage. Together, these languages create a cohesive and user-friendly web experience.