Oak tag, sometimes called poster board or tag board, is a heavy paper or cardboard stock that is used for a variety of art and craft projects. However, there are several synonyms for this versatile material that you may not be familiar with. These include bristol board, foam board, chipboard, and cardstock. Bristol board is a sturdier version of oak tag, while foam board has a foam core and is often used for signs and displays. Chipboard is a type of pressed paperboard that is commonly used for packaging and book covers, and cardstock is a thick, high-quality paper that is perfect for greetings cards and other stationary items. Whatever your project, there is likely a synonym for oak tag that will suit your needs.