Recently I directed a non-developer to a AEM documentation page for an overview of how we query the JCR. They were having an unusual problem with the concept of CRUD. Then I looked at the documentation in which you describe CRUD as Create, REPLACE, Update, Delete. I have always know it as Create, Read, Update, Delete.
Further, your description paragraph for "R" is Retrieve which is as good as Read but inconsistent with this paragraph: