Science fiction (sci-fi) is a broad genre that explores imaginative concepts often based on scientific principles, technology, space exploration, time travel, parallel universes, and extraterrestrial life. It can encompass a wide range of themes and settings, from utopian societies to dystopian futures, and can take place in space, on Earth, or in entirely fictional worlds. Cyberpunk, on the other hand, is a subgenre of science fiction characterized by its focus on advanced technology and its impact on society, often featuring a juxtaposition of high-tech and low-life. In summary, while sci-fi encompasses a wide range of speculative ideas and narratives, cyberpunk is a specific subgenre that focuses on the intersection of advanced technology and societal issues, often set in a dystopian future.