Practical keyword guide for books in Amazon Ads

Kader Gómez

Kader Gómez

Co-Founder of Alavante, Book Marketing Specialist & Senior Developer.

Practical keyword guide for books in Amazon Ads

Practical guide: keywords for books in Amazon Ads

If your ads are not reaching the right readers, the issue is often less about the ad itself and more about the keywords. The practical fix is to build keywords that describe the book the way a customer would search for it, then refine them with performance data Source.

Amazon Ads says the right keyword strategy helps titles appear in shopping results for the right readers. For books, its guide breaks keywords into five types, from broad to specific: category, general, competitive, relevant niche, author or publisher, and title-specific Source. KDP adds that keywords should accurately describe the book’s content and reflect the words customers actually use when searching Source.

What to do first

Start with a mix of keywords that covers several search intentions:

  • Category: broad terms that place the book in its overall area.
  • General: genre or subgenre labels readers would naturally use.
  • Competitive: titles or ASINs of similar books to reach readers already interested in that type of read.
  • Relevant niche: specific themes, traits, tone, or elements in the book.
  • Author or publisher: useful when readers search by comparable references.
  • Title-specific: unique phrases or elements tied to your book Source.

This matters because Amazon recommends starting with all of those types and then optimizing by performance instead of guessing the best mix from the start Source.

How to write keywords that actually help

KDP recommends thinking like a reader: if a customer would search for “military science fiction,” use that logical order instead of scrambling the same words Source.

Other practical editorial habits:

  • Use words that describe the book’s real content.
  • Think about the language a buyer would actually use, not just your internal labels.
  • Check how your terms behave in search before you settle on them.
  • Avoid repeating information already covered in the title, contributors, or categories Source.

What not to include

KDP says to avoid misleading words, subjective quality claims, seasonal terms like “new” or “on sale,” misspellings, and irrelevant or misleading terms such as author names not associated with the book Source.

That is not just a stylistic preference: the platform warns that metadata meant to advertise, promote, or mislead in a confusing way is not acceptable Source.

When to review and how to adjust

Amazon Ads recommends checking performance after two weeks in campaign. At that point, review which keywords generate the most traffic and clicks, stop using the lowest-performing terms, and create new campaigns from the terms that work best Source.

Reports also help you decide. In particular, the search terms report shows shopper queries that resulted in at least one click; those terms can become new keywords or negative keywords to avoid spending on weak searches Source.

Fictional example: before and after

Fictional book: a historical novel about a physician in colonial America.

Before:

  • history
  • novel
  • strong woman
  • book

These terms are too broad and say very little about the content.

After:

  • historical fiction
  • colonial America
  • physician protagonist
  • women’s historical fiction
  • frontier survival
  • historical drama

This version is stronger because it combines genre, setting, and narrative features that a reader might actually search for. That approach matches Amazon Ads and KDP guidance: start with varied terms, watch performance, and adjust based on real searches Source Source.

How to turn data into useful changes

When you review the search term report:

  1. Group the terms that do generate clicks.
  2. Identify which ones share the same buying intent.
  3. Turn the best ones into new keywords.
  4. Add negative keywords for low-relevance searches.
  5. Test different combinations in new campaigns.

Each step helps you spend more efficiently and reduce search noise; it is not about promising specific outcomes, but about improving the fit between the book, the ad, and the query Source.

Short checklist

  • My keywords describe the book’s real content.
  • I included both broad and specific terms.
  • The words reflect how a reader would search.
  • I avoided repeating title, category, or author information.
  • I reviewed results after two weeks of campaigning.
  • I turned useful terms into new keywords.
  • I added negative keywords where searches were weak or irrelevant.

Short answer

If you want a simple way to begin, use this order: category + genre + niche + comparable titles + concrete book traits. Then measure which terms attract real clicks and adjust from there Source Source.

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