Book-length comics take different forms in different cultures. European comics albums are most commonly printed in A4-size colour volumes. In English-speaking countries, bound volumes of comics are called <answer>graphic novels</answer> and are available in various formats. Despite incorporating the term "novel"—a term normally associated with fiction—"graphic novel" also refers to non-fiction and collections of short works. Japanese comics are collected in volumes called tankōbon following magazine serialization.
What term can mean a non-fiction piece of a collection of short pieces?
graphic novels