Whats the difference between a sport and a passtime or hobby?

It seem that the boundaries are becoming very blurred, with more and more things becoming classed as sport and having a competitive edge. What is the differnce between a game, a sport, and a passtime or hobby?

Parents
  • If you are very, very good at a sport you may be paid ridiculous amounts of money for doing it and receive adulation from the public at large. If you are very, very good at a hobby you spend lots of your money on it and receive grudging toleration from family and friends.

Reply
  • If you are very, very good at a sport you may be paid ridiculous amounts of money for doing it and receive adulation from the public at large. If you are very, very good at a hobby you spend lots of your money on it and receive grudging toleration from family and friends.

Children