Basic Payroll Dictionary of Payroll and HR Terms http://www.paytemps.net/web_payroll_dictionary_web.htm. This dictionary is a compilation of terms related to the payroll professional in general, but also includes terms specific to ADP. The definitions relating to ADP terms do not include any internal or restricted proprietary information, and can be otherwise obtained from
Cement fibre boards are more used in decorative applications and can be manufactured from 3 mm to 20 mm thickness. Fibre boards are made in very thin layers, making it extremely difficult to manufacture high thickness boards.
Based on Googling, not experience, it seems that Foamex can be printed on directly and is flexible either 3mm or 5mm thick. Foam core (this I use) is a mount board to which prints are mounted. It can be thicker than Foamex and is defiantly not flexible except maybe a tiny bit in the thinner versions. For the type of display you're planning I would absolutely use foam core. IMHO only.