**2. What is the application of wood?**

#### **2.1 Woods**

The main uses of wood are fuel consumption, however, we must remember that wood was the main source of energy and fuel before the year 1850. Currently, wood is seen as a fuel mostly in developing countries, which can be mentioned in African and South American countries.

People who live in industrialized countries and their main source of energy supply is oil should know that their energy supply sources (coal, gas, oil) were created from decomposed forests thousands of years ago. Once consumed, it takes millions of years to be replenished. Some scientists believe that the current forests, with careful management, can be a source of inexhaustible production of firewood and charcoal, which are very cheap [13].

Today, wood is used a lot. Wood is an excellent material for use as fuel. On the other hand, in the construction industry, wood is used to make materials or the body of the building. The use of wood for building construction dates back more than 6000 years ago, and this material is still widely used in the construction industry. On the other hand, some people use wood as a material to decorate the building. Wood is used to make all kinds of tables and furniture, decorative and consumables, and it is considered one of the most widely used and common materials for making partitions, flooring, doors, and windows [14].

In fact, more than 5000 different wooden products are continuously produced. Products of this category have been known for a long time, some of which are: cellulose, wood varnish, and artificial silk [15].

Another increasing use of wood is in the production of compact boards such as plywood, chipboard, and fiberboard. Even the complex systems that made space travel possible require the major use of wood and its products, which can be referred to as a type of cork from oak bark as thermal insulation.

The following are the most common uses of wood:

