Lumber, also called timber or fine wood in the United Kingdom, Australia, and New Zealand, is wood that has been processed into uniform and useful sizes, including beams and planks or boards. Lumber i
Wood cut from Victorian Eucalyptus regnans
The harbor of Bellingham, Washington, United States, filled with logs, 1972
A sawmill with the floating logs in Kotka, Finland
A common 50 by 100 mm (2-by-4-inch) board
A plank is timber that is flat, elongated, and rectangular with parallel faces that are higher and longer than wide. Used primarily in carpentry, planks are critical in the construction of ships, hous
Lumber
…the United Kingdom, Australia, and New Zealand, is wood that has been processed into uniform and useful sizes (dimensional lumber), including beams and planks or boards. Lumber is mainly used for construction framing, as well as finishing (floors, wall panels, window frames). Lumber has many uses beyond home building…
A plank used in the repair of a ship
Cutting a log into planks in a sawmill
Plank boardwalk, Dufferin Terrace, Quebec City, Canada
Plank footbridge, Thailand