What is an index in a book?

In a book, an index is typically found at the end and provides an alphabetical list of terms, names, and topics that are covered in the book along with the corresponding page numbers where they can be found. Indexes are useful for readers who want to quickly find specific information within a book without having to flip through every page.

An index is created by compiling a list of keywords, concepts, and other important items that are deemed relevant to the content of the book. Entries in an index are arranged alphabetically for easy reference and typically include cross-references for related terms.

Authors or publishers of a book may hire a professional indexer to create the index, ensuring that it is accurate, comprehensive, and user-friendly. A well-organized index can enhance the usability and accessibility of a book, making it easier for readers to locate information efficiently.