Adventure fiction is a genre of fiction in which an adventure, an exciting undertaking involving risk and physical danger, forms the main storyline.
Fantasy is a genre of fiction that uses magic or other supernatural elements as a main plot element, theme, or setting. Many works within the genre take place in imaginary worlds where magic and magical creatures are common.
Science fiction is a genre of speculative fiction dealing with imaginative concepts such as futuristic science and technology, space travel, time travel, faster than light travel, parallel universes and extraterrestrial life.