The term "Family Xylariaceae" refers to a group of fungi that are commonly known as the "Wood decay fungi". These fungi are responsible for the decomposition of wood and other plant materials. However, there are several synonyms for this term, including "Xylariaceae", "Xylariales", and "Xylariomycetidae". These synonyms are often used interchangeably to describe the same group of fungi. Regardless of which term is used, the Family Xylariaceae is an important group of fungi that play a crucial role in the ecological process of wood decomposition. They are also utilized in various fields, including medicine, agriculture and biotechnology.