A dowel is a smooth, cylindrical rod that is primarily used to align and join two pieces of wood. A dowel pin is a short dowel with a grooved or threaded surface that is used to create a more secure connection between two pieces of wood.

The best type of wood for furniture construction depends on the intended use and the desired aesthetics. Hardwoods, such as oak, maple, and mahogany, are durable and offer a classic look, while softwoods, such as pine and fir, are more pliable and easier to work with.

When choosing an upholstery fabric, consider factors such as durability, comfort, and style. Leather and vinyl are highly durable, but they can be more expensive than other options. Velvet and microfiber offer a luxurious feel, while canvas and denim are known for their durability and versatility.

There are three main types of wood finishes: penetrating finishes, such as oil and wax, which penetrate the wood's surface to protect it from moisture and wear; surface finishes, such as varnish and lacquer, which create a protective layer on the wood's surface; and combination finishes, which combine the properties of both penetrating and surface finishes.