Wood

    Wood is natural material. It comes from the trunks and branches of trees. Different trees produce different kinds of wood. Some woods, such as oak, are very hard. Others, such as balsa, are very soft. Most woods are light enough to float but some, such as ebony, sink. Wood has distinctive smell. When you hit it with a hammer, it has a distinctive sound. Some woods, such as ebony, are so hard that it is almost impossible to saw or knock a nail into them. Balsa wood is so soft so you can easily break it with your fingers. Different woods are chosen to make different types of furniture, depending on how strong the furniture needs to be.

What does "distinctive" mean?