Refers to a binding method for publications with page counts of 8-48pp (in general terms).
A pamphlet is most commonly bound using metal staples via a saddle stitcher by a printer or finisher.
A pamphlet can be also be bound with thread either by hand (stitched) or using an adapted sewing machine (singer sewn), these methods are more common in categories of publishing such as artists’ books, zines or self-publishing.
A pamphlet is spineless and so has a diminished presence on the library or book shelf.
A pamphlet is often cheaper and smaller than other kinds of publications, considered more emphemeral, more throw away.
A pamphlet is able to be produced with less specialist tools and therefore is also a format used by many self and small publishers: radical, political, religious, academic, artistic or otherwise.