What is the primary purpose of a glossary in a book?

The primary purpose of a glossary in a book is to clarify terms encountered in the text. A glossary serves as a reference tool that provides definitions for specialized or complex vocabulary that may not be familiar to the reader. This is particularly important in texts that include technical language, academic terminology, or any terms that are crucial for understanding the subject matter. By offering clear explanations of these terms, the glossary enhances comprehension and allows readers to engage more effectively with the material.

In contrast, while entertainment value, summarizing content, or listing characters may be relevant functions of other components in a book, they do not align with the primary purpose of a glossary. A glossary is specifically designed to aid in understanding, making it an essential tool for readers seeking to deepen their grasp of the text.