Have you made an early start on the Rioja Brian?
Naaa! Rioja Blanco is ok but I prefer a nice Crianza myself.
OK so nobody wants to play the game so here's the answer...
They are not masts, vents or funnels when they are a King post!
When nothing is attached to said items then they are known as masts, vents or funnels. However if they have the capacity to lift items of cargo via a boom and tackle arrangement then they are known as King posts.
I don't think its going to change anything for anybody, unless you are sitting a Masters certificate! A funnel will always be a funnel and a mast will always be a mast, regardless of what is attached to it.