Small paperback books which contain many issues of a manga series.

collections of manga roughly equivalent to the North American trade paperback editions that collect single issues into one publication. Tankoubon tend to be smaller, such as a 7"x5" format.

(単行本) - single volume which collects multiple chapters of a manga series. In Japan, magazines containing chapters from many different manga series are published regularly, usually weekly or monthly. If a series is popular, groups of chapters will later be republished in small paperback volumes (somewhat similar to trade paperbacks or graphic novels in the USA).

Manga in a paperback novel sized format.

The Japanese version of a manga Graphic Novel volume.

books, not magazines

A book format in which manga are compiled after having had successful serialized runs in magazines. Tankoubon means separate volume and these softcover books contain around five to eleven story installments. Tankoubon are usually printed on high quality paper and black ink, whereas the larger monthly serial magazines are produced less expensively with colored ink on newsprint paper.