By Size:
* Pocket books: These are small enough to fit in a pocket.
* Mini books: This is a general term for very small books.
* Pamphlets: These are usually small, thin booklets, often informational in nature.
* Chapbooks: These are small, inexpensive books, often containing poetry or ballads.
By Content:
* Board books: These are sturdy books made for babies and toddlers.
* Picture books: These are books with illustrations that tell a story.
* Story books: This is a general term for books containing stories.
* Novellas: These are short novels.
Other:
* Booklets: This is a general term for small books.
* Leaflets: These are single sheets of paper that fold into a small booklet.
Ultimately, the best term to use will depend on the specific type of "little book" you are referring to.