tour:a journey or route all the way around a particular place or area;

Travel : the act of going from one place to anothe

Backpacker is not the same as traveler and tourist

背包客（驢友、自助旅行玩家)

職業網球員賽事叫tour

整個很像阿

tour可能會有personal or business之分,travel則單指一個移動的過程 toursit的身分有很多種,backpacker只是其中之一...外國導遊考試的考題