Aviation
Aviation, or air transport, refers to the activities surrounding mechanical flight and the aircraft industry. Aircraft includes fixed-wing and rotary-wing types, morphable wings, wing-less lifting bodies, as well as lighter-than-air craft such as balloons and airships.
Tourism
Tourism is travel for pleasure or business; also the theory and practice of touring, the business of attracting, accommodating, and entertaining tourists, and the business of operating tours. Tourism may be international, or within the traveller's country. The World Tourism Organization defines tourism more generally, in terms which go "beyond the common perception of tourism as being limited to holiday activity only", as people "traveling to and staying in places outside their usual environment for not more than one consecutive year for leisure, business and other purposes".
Travel
Travel is the movement of people between distant geographical locations. Travel can be done by foot, bicycle, automobile, train, boat, bus, airplane, or other means, with or without luggage, and can be one way or round trip. Travel can also include relatively short stays between successive movements.
Aviation
Pilots take no special joy in walking: pilots like flying. Pilots generally take pride in a good landing, not in getting out of the vehicle.
Neil Armstrong, On his famous moonwalk, as quoted in In the Shadow of the Moon : A Challenging Journey to Tranquility, 1965-1969 (2007) by Francis French and Colin Burgess
Travel
Traveling is no fool's errand to him who carries his eyes and itinerary along with him.
Amos Bronson Alcott, Table-Talk, Traveling.
Aviation
The air is the only place free from prejudices. I knew we had no aviators, neither men nor women, and I knew the Race needed to be represented along this most important line, so I thought it my duty to risk my life to learn aviation and to encourage flying among men and women of our Race who are so far behind the White race in this modern study.
Bessie Coleman as quoted on Blackhistorypages.net