Roadbook is a term used to describe a set of written instructions used for traveling on roads or through an unfamiliar area. However, there are various synonyms for the word 'roadbook,' including guidebook, itinerary, site guide, travel guide, and route map. Guidebook refers to a book providing information or guidance on a particular subject, while itinerary is a detailed plan or list of places to be visited on a journey. Site guide and travel guide describe a guide that shows a list of tourist attractions and provides details about them. Finally, a route map provides a visual representation of the route itself. Despite their differences, all of these words refer to the same general concept - providing directions and guidance to travelers.