The Meaning of "Professional freelance programmer"

So what does it mean to be a professional programmer? What does it mean to be a professional anything? Some definitions simply say to be a professional is "to make money from a skill," but true professionals also have a set of qualities often described as "professionalism." In my opinion, these qualities are: trustworthiness, teamwork, leadership, communication, constant updating of skills, an interest in minimizing risks and accountability. Each of these affects the professional programmer in certain ways.