 I have spoken about consituents in this context: the nature in the particular and the haecceity are in effect constituents of the particular. So there must be some kind of distinction between them. This distinction cannot be real, since according to Scotus real distinction requires separability, and the features are not separable from each other any more than they are separable from themselves. Neither are they anything like discrete parts of some whole. They are, as Scotus puts it, “formally distinct”: