Web development involves creating and maintaining websites, web applications, and other web-based software. This can include front-end development, which involves designing the user interface and user experience, and back-end development, which involves creating the logic and functionality that powers the website or application.

Web design, on the other hand, is primarily focused on the visual and aesthetic aspects of a website or application. This can include creating layouts, selecting color schemes and typography, and designing logos and other graphics.

As for capabilities, employers may be looking for web developers or designers proficient in various programming languages and tools. These can include HTML, CSS, JavaScript, jQuery, and various content management systems (CMS) such as WordPress or Drupal.

In addition, strong problem-solving skills and attention to detail are important in both web development and design. Developers should be able to identify and solve technical issues, while designers should be able to create visually appealing and effective designs that meet the needs of the website or application.

Overall, a successful web development or design professional should be able to work collaboratively with clients and team members, communicate effectively, and stay up-to-date on the latest technologies and trends in the field.