An expert is someone who is accredited by EntreBahn as being qualified in one or more business fields. For example, an expert could have expertise in financing and/or sales.
Expert is also a generic term we use for the roles of advisor, mentor, coach, and similar terms. In all cases, the individual has been independently accredited by us. The differences between being a coach and being a mentor is explained here.
For most people, the major difference between the two roles is that a coach is paid for their feedback and advice while a mentor is not.