Comment by sly010

There is in fact a 3rd: build time dependencies.

Control: Object/module/function A calls object/module/function B.

Data: The call can either push or pull data.

Build dependency: The call can be direct (A depends on B) or indirect through an interface/callback/etc (both A and B depends on the interface).

Ideally every design document includes all 3 as separate diagrams.