A best-selling novel is a book that has sold a significant number of copies, often ranking high on sales charts. These novels can span various genres, including fiction, non-fiction, romance, and mystery. The popularity of a best-selling novel is usually measured by its sales figures over a specific period, often tracked by organizations like the New York Times or Amazon. Best-selling novels often capture the public's interest due to compelling storytelling, relatable characters, or timely themes. Authors like J.K. Rowling and Stephen King have produced numerous best-sellers, contributing to their fame and financial success. These novels can influence culture and spark discussions among readers.