Often PCB designers refer to the 2D images they see in the PCB design viewport as footprints (IPC -> Land Patterns).
- One or more schematic symbols. These are logical images to allow you to logically define devices used and their required connectivity.
- One and only one 2D footprint/land pattern displayed to make physical placement and electrical connections using Nets ( An acyclic graphical of tracks).
- 3D Model. Yes all DEX footprints generate 3D models although the model can just be copper and silkscreen patterns for the top/bottom side and 3D holes.
- Spice simulation model.
- BOM part.
- Zero or more PDFs (usually data sheets)
- Zero or more Text Documents (usually data sheets)
- Metadata such as manufacturer or user define parameters.
I have never felt comfortable calling what you see in the 2D PCB viewport as a footprint It seems like I’m only telling half the story.