What is the difference between cursors ...

In numerous texts, I've seen the term cursor used interchangeably with the term iterator. However, it doesn't seem right that they are treated as the same thing. To me, an iterator allows iteration of a container with no knowledge of the container itself. A cursor, on the other hand, allows iteration of a container as well but has implementation details specific to the container type, so it does keep a reference to the container. Additionally a cursor's interface mirrors the interface of the container kind of like the facade pattern.