Identify a common type of casket used in traditional burials.

Wood and metal caskets are the most commonly used types in traditional burials due to their durability, aesthetic appeal, and cultural significance. Metal caskets, typically made of steel or bronze, offer longevity and resistance to the elements, while wood caskets bring a classic, warm appearance often preferred for their traditional connotations. They can be found in various styles and finishes, allowing families to choose according to their tastes, budget, and the wishes of the deceased.

Other options like concrete vaults and biodegradable boxes serve specific roles in the burial process or are preferred in different contexts, but they do not typically constitute the casket itself. Plastic containers are generally not associated with traditional burial practices and are more commonly found in cremation scenarios or as temporary holding receptacles. Thus, wood and metal caskets stand out as the standard for traditional burials due to their historical and cultural significance.