Omnibus

𐑪𐑥𐑯𐑦𐑚𐑩𐑕

In the context of comics, an omnibus is a large hardcover book collating the complete works of a franchise for a given time span, author, or series. They're usually over 500 pages long, and often over twice that. Even then, comics are so prolific that an omnibus is likely to be merely a single volume of a larger series.