Difference between Postillion and Postilion

What is the difference between Postillion and Postilion?

Postillion as a noun is a rider mounted on the near (left) leading horse who guides the team pulling a carriage. while Postilion as a noun is a rider mounted on the near, leading horse pulling a carriage who guides the team

We hope you now know whether to use Postillion or Postilion in your sentence.