Oud Incense "definition paragraph"

            Oud Incense, an extract from wood, is an aromatic substance that is used in Arab Gulf. It was brought from Eastern Asia countries such as India, Bangladesh, Malaysia, Indonesia, Philippines, and Vietnam, especially from trees that grow in the highland areas of these countries. In fact, Gulf's people have an uncommon way to use the oud. They place it on burning coals and a smoke with a wonderful smell comes out. In addition, Gulf women use the normal oud daily to perfume the house, clothes, and the family members. Also, oud is a sign of greeting and is used for welcoming visitors. There is also a very expensive type of oud which is used for special occasions and celebrations, or when the family receives a visitor who knows the value of precious oud. Furthermore, good incense has special properties such as the color of its smoke tends to be blue. High quality oud also has a lot of oily bubbles while burning. Further, it doesn't harm or bring tears to the eyes when its smoke is inhale, and it has many dark brown or black veins. Indeed, oud Incense is a famous perfume in Arab Gulf countries.