<p class="MsoNormal"><span lang="EN-GB" style="font-family: 'Segoe UI',sans-serif; color: #374151; background: #F7F7F8;">While both terms are often used interchangeably, a book writing agency might imply a broader scope of services beyond just writing, such as editing, publishing, and more. A book writing company could focus primarily on the writing aspect itself.</span>