A content writer is a professional who creates written content for websites, blogs, articles, social media, marketing materials, and other digital platforms. They are responsible for researching, writing, and editing a wide variety of content, including website copy, blog posts, product descriptions, and more.

A book writer is a professional who writes books, novels, non-fiction works, and other literary pieces. They may work on their own or with a team of editors and publishers to bring their work to fruition. They may also be responsible for researching and fact-checking their work, as well as promoting their finished books to readers and reviewers.