Wood glue is an adhesive used to tightly bond pieces of wood together. Many substances have been used as glues. When creating a woodworking project, the most important thing you need to pay attention to is the joinery technique as well as the wood glue to hold your project together. When it comes to the types of wood glue, there are plenty of options, but you need to choose one of them. Different types of wood require different kinds of wood glue.