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The name of the person who wrote the afterword for a book or publication. It represents the individual responsible for providing concluding remarks, insights, or commentary that accompanies the main text.

A numeric rating that indicates the depth or sophistication of augmented reality (AR) features in a product, such as the number of interactive layers, tracking accuracy, or supported AR content types. The value helps users compare how advanced the AR experience is across different models.

The total count of augmented‑reality (AR) quizzes included with the product or available for use. It represents how many distinct quiz items can be accessed, played, or completed within the AR experience.

The total number of points a user receives for completing an augmented‑reality (AR) quiz. This numeric value represents the reward or score assigned to each quiz, allowing users to track progress and compare performance across multiple quizzes.

The individual or group credited with creating the main content of a product, such as a book, film, or other creative work. The value is a free‑text string representing the name(s) of the primary creator.

The age range or maturity level for which a book is intended, indicating the appropriate reader group based on comprehension and content suitability.

A short alphanumeric code that indicates the appropriate reading difficulty or maturity level for a book, helping parents and educators select titles suitable to a reader’s comprehension skills.

The name of the entity that publishes or distributes the product. It typically refers to a publishing house, imprint, or brand responsible for producing and releasing the item.

The natural language in which a product’s content, user interface, or documentation is presented. It indicates the primary linguistic context for text, subtitles, audio tracks, and other language-dependent features.

The Lexile score is a numeric measure of a text’s reading difficulty and the reader’s ability to comprehend it. It allows educators, parents, and students to match books with appropriate skill levels and track progress over time.

The official title of the product as it appears in its source material, without any translations or modifications. It is used to display the primary name on detail pages and for search purposes.

The total count of individual pages contained in a book or printed publication. It represents the number of physical sheets that make up the product, regardless of layout or formatting.

The overall size of a product expressed as three numeric values—height, width and depth—with an appropriate length unit (e.g., cm, in). It allows customers to assess fit, shipping requirements and compare physical sizes across items.

The calendar date on which the product was first made available to the public or released for sale, expressed as a full year, month, and day (YYYY-MM-DD). This attribute can be used to filter or sort items by release period.

The name of the entity that publishes or distributes the product, such as a book, magazine, or other media item.

The age range or maturity level for which a book, educational material, or other content is intended, indicating the appropriate reader group based on comprehension and content suitability.

The category or genre classification of a book, such as Fiction, Non‑Fiction, Biography, Science Fiction, Mystery, etc. It indicates the general subject matter or narrative style that defines the content and helps readers find titles that match their interests.

The calendar year in which the product was first published or released to the public. It is expressed as a four‑digit number (e.g., 2015) and can be used to filter, sort, or compare products by their release period.