BIM or VDC?

BIM = Building Information Model(ing)
VDC = Virtual Design and Construction

Sometimes I hear these two terms used interchangeably. I was writing some emails the other day and included some snapshots from my building information model to help virtually design and plan construction. It made me think about these two terms and how so many different deliverables and analysis go into constructing and ultimately maintaining a building.

Most of the building information models I make are just for the fabricated parts of the structure or exterior cladding of a building. I consider myself virtually designing and planning construction for a detailed level building information model.

Then there is the jobsite and having a site plan overlay. Field logistics, safety zones, delivery paths, crane locations. What about lighting/shading and texturing of materials often involved in the front end planning with the customer? Airflow and energy studies, and then the structural analysis. All of these things are a part of a/the Building Information Model and are digitally visualized and planned in a virtual environment.

So is BIM the repository of data and deliverables to create and maintain the project, and then VDC is more that "act" or "process" of digitally authoring and utilizing this data?

When you see the images below, what do you think?