Like many philosophical terms, dualism and duality are used differently by different people and in different circumstances. I am aware of Substance dualism (mind and body being separate things entirely or of different substance), Property dualism (mind and body having separate or distinct properties or kinds of properties) and moral dualism (a distinct separation or opposition between good and evil). Duality is often used in conjunction with or as another word for any one of these concepts.
However, duality is also used to describe the separation between our subjective conscious experience and the external world which we are experiencing; that feeling that we are a separate entity from others and the world (even though many would say there is no real separation at all). I wondered if there is a name for this type of dualism or duality and, if so, what is it called?