nomenclature of element, roles levels etc in coursepress pro

Its just to verify to get the whole picture of elemnts and roles and how to name them.

eg participant or student or learner

eg lecturer, trainer, educator

courses can be group together to form an education?

courses consist of units ?

units consist of unit elements?

elements (can) consist of lectures ?

lectures consist of media types?

In the light that the plugin can be translated, it can also be customized in terms and wordings, does not need to be foreign language. right?

I assume that somewhere in the documentation my questions are answered, already.

I took the freedom to ask bluntly, anyway.