Some wood importers can not understand what is the difference between lumber wood and timber wood.The terms "timber" and "lumber" are often used interchangeably, but there can be some regional variations in their usage. In general, however, there is a subtle distinction between the two terms:

1. Timber: The term "timber" typically refers to wood that is still in its natural state, usually after it has been harvested from trees. Timber is often used to describe wood that is suitable for construction, such as beams, planks, or logs. It can also refer to unprocessed wood used for various purposes, including furniture, flooring, and other applications.

2. Lumber: The term "lumber" usually refers to wood that has been processed and cut into standardized dimensions for commercial use in construction, woodworking, or other applications. Lumber is typically sawn, planed, and sometimes kiln-dried to enhance its strength, stability, and usability. It is commonly sold in various sizes and grades to meet specific industry requirements.

In the Turkish language, the term for timber is "kereste," which refers to wood in its natural state after being harvested from trees. It encompasses both raw and unprocessed wood used for construction, woodworking, and other applications.

The term for lumber in Turkish is "kereste tahtası." It specifically refers to processed wood that has been cut, shaped, and prepared for commercial use. "Kereste tahtası" is commonly used to describe standardized wood boards or planks used in construction, carpentry, and various other industries. Please note that languages can have regional variations, and there might be slight differences in terminology based on specific dialects or local usage. In summary, timber generally refers to raw or unprocessed wood, while lumber refers to processed wood that has been cut, shaped, and prepared for commercial use.