This document provides definitions and discusses trends related to tourism. It defines key tourism terms like tourist, tourism, tourist destinations, and generating areas. It also distinguishes between domestic and international tourism. Graphs show that both have seen increasing trends, with domestic Chinese tourism growing from 1.2 billion arrivals in 2005 to 2.6 billion in 2011 and international tourism increasing from 25 million arrivals in 1950 to 940 million in 2010. The document also discusses factors driving the growth of tourism, including increasing incomes, leisure time, education levels, improved technology and transportation, and attractive destination offerings.