The word 'workbook' is a transparent compound formed from two native English roots of Germanic origin. 'Work' derives from the Old English 'weorc', related to the Proto-Germanic werkan, meaning "to do" or "to perform," which itself traces back to the Proto-Indo-European werg-, meaning "to do" or "to work." 'Book' comes from Old English 'bōc', originally meaning "beech" (the wood on which runes were carved), from Proto-Germanic bōks. The compound logically emerged in the early 20th century to describe a book designed for a specific, practical task—containing exercises, problems, or instructions—rather than for continuous narrative reading. Its formation follows the common Germanic pattern of combining two independent nouns to create a new, specific concept where the first element modifies the second.

Structure: work + book - work (Old English 'weorc'): The core concept of activity, labor, or task. In this compound, it functions as a modifier specifying the book's purpose. - book (Old English 'bōc'): The physical object for writing or reading. It functions as the head noun, denoting the category of the item.