This document discusses different forms and measurements of tourism. It outlines domestic, inbound, and outbound tourism. It also defines internal, national, and international tourism. The document then discusses different methods for measuring inbound, domestic, and outbound tourism such as administrative records, surveys, and household surveys. It notes that identifying differences in coverage between tourism statistics and Balance of Payments data requires identifying different categories of travelers and sources of information. The document concludes by proposing more colloquial wording and explicitly relating tourism statistics to the "travel" item in the Balance of Payments.