Science fiction is a genre that explores imaginative concepts, often involving advanced technology, space exploration, time travel, and extraterrestrial life. It allows writers and filmmakers to speculate about the future and the impact of scientific advancements on society. Notable works include Isaac Asimov's "Foundation" series and Arthur C. Clarke's "2001: A Space Odyssey." Thriller, on the other hand, is a genre designed to evoke excitement and suspense. It often features high-stakes situations, unexpected twists, and a fast-paced narrative. Common themes include crime, espionage, and psychological tension, with popular examples like Gillian Flynn's "Gone Girl" and Alfred Hitchcock's films.