As highlighted in the introduction, the language used to discuss chemical systems in a non-equilibrium steady state is still in development. Thus, some widely-used terms may mean different things to different people. Other terminology, while evocative, can be actively misleading, particularly when it draws apparent equivalence between macroscopic processes and those taking place at the scale of molecules. Here we address key examples and related issues; as scientists, we should strive to define concepts as clearly and accurately as possible, otherwise our scientific discourse will be confused and incoherent.