Board Thread:Wiki-Related Discussion/@comment-91424-20160807191405/@comment-24674051-20160808164308

I would think that set dressing would need to be something that still has relevence/significance, and not just random, everyday type decoration.

for example the Picture of Emma and Snow that was on counter in Snow's apartment in "We Are Both". yeah, David does pick it up and look at it in that episode, so it could be considered a prop, but I would probably opt more for Set Dressing for since it is seen other times but not really interacted with.

Regina's full length mirror is an unusual case. in one episode we see Cora coming through from Wonderland ("Souls of the Departed"). In a few episodes we see Regina using it to spy on Snow (or someone else), but other episodes it's just there as part of the set for Regina's sitting room. So it displays aspects of both a prop and a set dressing.