I would also like to understand the distinction.

With the updates, is basic geometry suitable for late elementary/early middle school-aged students?  

Did you do these courses and find an answer? Or does anybody else have an answer? Usually one course is more extensive than the other and captures 100% of the other course. I would love to know if these course share the same relation.

Alright, I did this on the mobile app, I press the explore button, and then I press the math courses, and then there were two options of geomentry so there was high-school geometry and Geomentry (all content), so If you want you can take the one or the other course if you want, hopefully this helps.