When wood is engineered from slices of lumber it is called plywood. Plywood can have 3 to 5 thin slices of wood glued together under high pressure.

When chips and fibers that remain after a tree is milled into lumber are combined and glued together it is called particleboard or fiberboard. Medium density fiberboard is made by breaking down wood chips into fibers, mixing the fibers with glue, and fusing the resulting mixture under heat and pressure to produce a board.