Dynamic
The particular shape a relationship takes: who holds which role, in what areas, under what terms.
Definition
Disambiguation
'Dynamic' is used broadly for any negotiated relational shape and more narrowly for specific ongoing authority arrangements. This article treats the general concept.
Dynamic is the word most commonly used to describe how a given relationship functions in practice. Two D/s relationships may share the same labels and yet have very different dynamics, because the participants have negotiated different balances of authority, protocol and daily life.