The meaning of the words "travel" and "travel" may vary in different novels and stories, but generally speaking, they have similar meanings. They both mean to travel through time or space to another place or time. Time travel usually referred to traveling back in time to the past or to a different future. In novels and movies, transmigration was often used to describe the protagonist returning to the past to change the course of history or to travel to a different future to explore a new world. Traveling usually referred to traveling through space to another place or a different universe. In novels and movies, traveling was often used to describe the protagonist entering another space to reach another place or traveling through the universe to explore the unknown world. Although the meaning of time travel and travel may be different, in novels and movies, they are usually used to describe the story of the protagonist traveling to another place or time.