These are areas where you create course content (Examples: Assignments, Syllabus, Tests, etc.) The "Course Menu" is where content areas are located. Some examples of “Content Areas” are "Course Documents" and "Assignments".
Module Pages contain Course Modules that you select from a list. A Course Module can be a tool, such as a calculator, or it can display dynamic information such as alerts, and announcements. Course Modules can be added to Module Pages only.