A caption is a brief explanation or description accompanying an image, video, or illustration. It provides context, helping viewers understand what they are looking at. Captions can be found in various media, including books, newspapers, and social media platforms, enhancing the viewer's experience by adding information or humor. In the realm of photography, captions often include details such as the photographer's name, the location, and the date the photo was taken. They can also convey the emotions or stories behind the image, making it more relatable and engaging for the audience.