Part Of

This dimension names the larger system or cycle that a physical process is a step within, a single stage of the rock cycle or the water cycle, for example. Wikipedia describes how, at a plate boundary, "their relative motion determines the type of plate boundary (or fault): convergent, divergent, or transform," each one a distinct part of the single larger system of plate tectonics. Browsing by part of groups individual processes under the wider system that contains them.