I didn't say, and I don't think, that the two things are substitutes for one another. They are two forms of one and the same thing, not two different things--even though we have different words for them and our own culture isnists quite loudly that they are two different things. It is you who are seeing things through Freudian mud-caked glasses here.

Words always get in the way of understanding how reality "works." Words are all we usually have to think with, but they really are horribly inadequate tools for that job: like trying to use a hammer to unscrew a nut from a bolt.