There's not a boundary between them, one is a subset of the other. And what it really shows is how old and large the Church is (and, specifically how many questions it's been called in to address.)

How doctrinaire the Church is a pastoral question that (in terms of the central authority at least) changes considerably over time and especially with changes in Popes. Because, for all the accumulated history, tradition, and specialized language the Holy See had accumulated, it's still essentially an absolute monarchy, and the approach of the institutions reflects the personality of the person at the head of all of them.