Travel is the movement of people or objects (such as airplanes, boats, trains and other conveyances) between relatively distant geographical locations. The term "travel" originates from the Old French word travail. Travel writing is a genre that has, as its focus, accounts of real or imaginary places. The genre encompasses a number of styles that may range from the documentary to the evocative, from literary to journalistic, and from the humorous to the serious. Travel writing is often associated with tourism, and includes works of an ephemeral nature such as guide books and reviews, with the intent being to educate the reader about the destination, provide helpful advice for those visiting the destination, and inspire readers to travel to the destination. Travel writing has also been produced by other types of travelers, such as military officers, missionaries, explorers, scientists, pilgrims, and migrants.