* Length of poems: A collection of short, haiku-style poems will be much smaller than a book of long, epic poems.
* Number of poems: Obviously, more poems mean a larger book.
* Font size and style: A book using a large, decorative font will take up more space than one with a smaller, simpler font.
* Paper type: Thicker, heavier paper will make the book bulkier.
* Binding: Hardback books tend to be larger than paperback books.
* Publisher's preferences: Some publishers have specific guidelines for their poetry books.
General size ranges:
* Pocket-sized: These are typically small, paperback books with a trim size around 4" x 6" or 5" x 7".
* Trade paperback: More common for poetry, these are usually around 5" x 8" or 6" x 9".
* Hardback: Hardback poetry books can range from trade size to larger formats like 8" x 10" or even larger.
Ultimately, the size of a poetry book depends on the specific content and design choices made by the author and publisher.