Wood
Lumber is sawn
Timber is lumber 5" larger in its least dimension
Wood is classified:
Softwood - evergreen - needle leave conifers
Pine
Fir is harder than basswood which is a hardwood
Spruce
Structural use for framing, sheathing, bracing
Hardwood deciduous, broad-leaved
Maple
Oak
Sycamore
Basswood is a hardwood
Balsa is a hardwood
Flooring,interior trim and furniture