Being a professional simply means that you earn your living from that activity. Doesn't matter if you're a footballer, or if you're flipping burgers at a fast food restaurant - if that's where you make your money, then you're a pro at that activity.
Today professional funnily enough often is taken as a reference that someone is specially good at something, but that's not the original meaning.
One who makes map is a 'cartographer'
You would call a professional cook a chef.
You need professional help. Go or call a dentist.
a masterbater
A professional boxer is often referred to as a "pugilist."
If you need information on the employment of professional drivers, you can look at the website for 1 Call Driving Solutions Ltd., or Express Employment Professionals.
A compendium
Call a professional
photographer?
who do you call a professional driver
pastarier
Barbiturates