Page 57 - Beginner's Guide to Aviation

Transfer and transit passengers stop momentarily at an airport before continuing their journey. Transfer passengers travel on a different aircraft after the stopover, but transit passengers travel on the same aircraft.
Both transfer and transit passengers board aircraft A at Changi Airport
At Heathrow Airport, transfer passengers
will change to aircraft B to continue its journey. Transit passengers continue flying on aircraft A.
Transfer passengers arrive at JFK Airport on aircraft B. Transit passengers arrive at JFK Airport on aircraft A.
Secondly, purpose of the trip. This category is further divided into Business and Leisure passengers. Business passengers travel for work purposes. Leisure passengers travel for personal reasons, such as holidays.
Business Passengers leisure passengers