Thanks for the welcome Jackie. I am looking for the word that describes the concepts that can't be expanded on. (I apologize for the plagiarism but you put it so eloquently). In response to your questions a TAFE teacher teaches at an institute that is an alternative to University. They tend to teach trades rather than degrees. I thought of asking my Uni teacher but I'm studying Psychology and I don't think he'd be very responsive.
Nice talking with you.