Articulation (architecture)
In architecture, articulation is a method of styling the joints in the formal elements of architectural design. Through degrees of articulation, each part is united with the whole work by means of a joint in such a way that the joined parts are put together in styles ranging from exceptionally distinct jointing to the opposite of high articulation—fluidity and continuity of joining.
Source: Wikipedia — Articulation (architecture) (CC BY-SA 4.0)