Human: What are the differences between the different types of wood? Assistant: 
The most obvious difference between different types of wood is their density. Denser woods, such as oak and mahogany, have a higher density than lighter-weight woods like pine and birch. This means that denser woods can be heavier, stronger, and more durable. Additionally, denser woods tend to be more expensive. Another important factor in determining the quality of a particular type of wood is its grain pattern. Grain patterns vary depending on the species of tree from which the wood was harvested. For example, cherry trees produce wood with a distinctive “bird’s eye” grain, while walnut trees yield a more pronounced “worm’s eye” grain. Finally, some types of wood are better for certain applications than others. For instance, hardwoods such as oak, cherry, and mahogany are often used for furniture construction because they are strong and stable, but softwoods like pine and cedar are generally preferred for flooring due to their lower cost and easier installation process.