Duology

A duology is a set of two works of art that are connected, and that can be seen either as a single work or as two individual works. They are commonly found in literature, film, and video games, and are less common in other art forms. Two-part works that are considered components of a larger work also exist, but they are not commonly referred to with the term "duology".

Most duologies are works of fiction involving the same characters or setting. Others can be connected only by theme or in less obvious ways.