The term "pocket-book" refers to a small book that is typically carried in a pocket or purse for easy access. Synonyms for this word include "notebook," "notepad," "journal," "agenda," "address book," "diary," "planner," "memo book," "ledger," "logbook," "record book," and "sketchbook." Each of these synonyms has a slightly different connotation and usage, but the overall meaning is the same. Choosing the right word from this list will depend on the purpose of the book and the type of information that needs to be recorded.