Plywood that is thick and used to cover platforms, suitable to be walked on.
Lauan
3/8” plywood
MDF
Plywood that is used for keystones and corner blocks to hold the joints of flats together.
Wood suitable for outdoor use, treated with chemicals (often slightly green). Wash your hands after use!
Treated Lumber
3/4” plywood
Medium density fiberboard
This wood is used for stage floors
Masonite
Used to frame heavy walls and platforms.
1x4
2x4
use it to cover flats (walls).