Looking for a definition & explanation of the term LMS Roles

We, along with some colleagues implementing the same LMS at different organizations are having difficulty wrapping our heads around the term ROLES. We tried to no avail to get the term dropped or changed to something that makes more sense to our internal educational lingo.

I believe the term Roles is a common LMS term from some discussions I've had with various people, but it is not a common term within our hospital learning environment. I'm curious if someone can share a good definition or explanation that we could share with our learners, educators, and managers.

Our understanding of a Role is "a set of courses (that may include certificate(s) with one/many courses within them as well) that are required to be taken by the staff assigned the role".

Is that true? Is there a better way to explain this terminology? We use the role synonymously with job title and this is perhaps where we need to redesign our thoughts. (previous post)