Tourist, Traveler, Visitor. Who Cares?

It might be important to point out that I commonly use the terms "tourism", "tourist(s)" "traveler(s)", and "visitor(s)" synonymously. From an Economic Developer's point of view, I honestly don't see a difference in value. A business traveler's money holds the same value as a leisure traveler's money. Last I checked, one hundred dollars spends the same no matter who gives it to you.