So the word PEPLUM is more encompassing and therefore more useful and, well, it just sounds right. To many film snobs though, a PEPLUM is a lower-grade European/Italian made film and to use the word PEPLUM for a Hollywood super-production like THE TEN COMMANDMENTS or BEN-HUR is wrong and an insult. Well, I disagree.
Drywall is a panel made of gypsum plaster pressed between two thick sheets of paper. It is used to make interior walls and ceilings. Drywall construction became prevalent as a speedier alternative to traditional lath and plaster. Sheetrock is a trademark for drywall made by the US Gypsum company. What it is.
Medium Density Fiber (MDF) is a building material used for construction purposes. It is made by the breakdown of hardwood and softwood with resins and wax to form wood fibers. It is much denser than the normal plywood board and came into being in late 1980s.