Timber or logs, dressed for use at sawmills, is called lumber.
Douglas Fir trees are often harvested and turned into lumber.
Lumber yards sell lumber to homeowners and contractors.
Wooden furniture, such as Amish furniture, is made of lumber.
Lumbermen are people who are engaged in or oversee the business
of cutting, processing, and marketing of lumber.
Lumber, wood, and wood products are used and purchased all over the place.