For many romance authors, keywords are one of the most overlooked pieces of book marketing. They’re usually filled out quickly during setup, often guessed at, and then forgotten.
The truth is that Amazon keywords matter. While it won’t rocket your sales overnight, it can do some of the heavy lifting to get noticed. The challenge is choosing keywords that help readers find your book. Too general or obscure, your book will get lost in the marketplace.
This article walks through how romance authors can choose Amazon keywords that will get their books noticed.
Download the Amazon Keyword Brainstorm Worksheet in the Freebies area for WWH members. Not a member? Subscribe to Write with Harte to join. It’s free (your password will be in your welcome email).
But First…
It’s important to understand that keywords alone won’t sell your book. When it comes to selling your book, you first need to get noticed. Next you need a cover that grabs a reader’s interest, and finally a blurb that makes them say “yes” to buying the book.
Your keywords help with the first phase of this process: Getting noticed.
Once you’ve been noticed, you need a quality cover and enticing blurb. All three work together.
What Amazon Keywords Do
Amazon keywords are search terms that help Amazon match your book to reader searches. When someone types words into the Amazon search bar, Amazon pulls results based on multiple factors, including your book’s metadata. That metadata includes your title, subtitle, description, categories, and the seven backend keyword fields available in KDP. It’s one of the reasons so many romance authors include tropes in their book titles on the cover as well as in the title of the Amazon listing.
Keywords help your book appear in search results, in recommendation carousels, and sometimes even influence category placement. They are not tags, hashtags, or marketing slogans. They tell Amazon what kind of book this is and which readers should see it.
One important thing to understand is that Amazon is not looking for creativity in keywords. It’s looking for clarity. Repeating the same word over and over does not help. Being poetic does not help. Trying to trick the system does not help. Clear, specific language does.
Think Like a Romance Reader, Not an Author
One of the biggest hurdles romance authors face with keywords is perspective. Authors think about their stories one way, and readers search for them in a very different way.
Authors think in terms of themes, emotional arcs, and character growth. Readers search for tropes, vibes, and promises.
A reader is far more likely to search for “enemies to lovers small town romance” than “a story about learning to trust love again.” That second phrase might be accurate, but it’s not how readers look for books.
When choosing keywords, step out of author brain and into reader brain. Ask yourself what someone would type if they wanted a book exactly like yours.
If your romance includes a single parent, that matters. If it’s a slow burn, that matters. If it’s spicy, sweet, dark, cozy, funny, or emotional, that matters. Keywords are about matching expectations as much as they are about visibility.
The Three Types of Amazon Keywords
A helpful way to approach keywords is to group them into three main types. Most romance authors will want a mix of all three.
1. Tropes
Tropes are one of the strongest discovery tools in romance. Readers actively search for them, even if they don’t always realize they are.
Examples include phrases like enemies to lovers romance, second chance love story, forced proximity romance, fake dating romance, secret baby romance, grumpy sunshine romance, and friends to lovers romance.
When possible, combine tropes with context. “Enemies to lovers romance” is good. “Enemies to lovers small town romance” is even better if it fits your book.
2. Subgenre and Settings
Subgenre and setting keywords help Amazon place your book among similar titles and help readers quickly understand the kind of romance you write.
Examples include small town southern romance, paranormal vampire romance, contemporary billionaire romance, romantic suspense police, historical western romance, or holiday Christmas romance.
These keywords work best when they reflect both genre and flavor. A cozy romantic mystery has a very different audience than a dark romantic suspense, even though both contain romance and danger.
3. Intensity & Heat
Intensity and heat keywords describe the experience the reader is looking for rather than the plot details. Examples include spicy romance books, steamy contemporary romance, clean sweet romance, slow burn romance novel, low angst romance, or cozy historical romance.
Reader intent keywords are especially important for managing expectations. Matching heat level and tone helps attract the right readers and reduces negative reviews from people who expected something else.
Note: Avoid too much spicy phrasing. Don’t use “erotic” or “sex.”
How to Research Amazon Keywords
You do not need advanced tools to start researching keywords. Some of the most useful information is already on Amazon itself.
1. Start with the Amazon search bar. Begin typing a trope, subgenre, or phrase related to your book and watch what Amazon suggests. These autocomplete phrases are based on real reader searches. If Amazon suggests it, readers are typing it.
2. Study the top books in your subgenre. Look at the top 20 to 50 titles that are clearly similar to yours. Pay attention to patterns in titles, subtitles, and series names. You are not looking to copy anyone. You are looking to understand shared language.
3. Pay attention to how readers talk in reviews. Readers often describe books in very direct terms. They will mention tropes, pacing, spice level, and emotional tone. This language can be extremely useful for keyword brainstorming.
4. If you have a backlist, look at which books perform best and see if there are shared elements in how they are positioned. Sometimes your own data can tell you more than any tool.
How to Fill the Seven Amazon Keyword Boxes Correctly
Amazon gives you seven keyword fields. Each field can hold a phrase, not just a single word. You do not need commas. Amazon treats each box as a phrase or string of words.
Use phrases instead of single words whenever possible. “Small town romance” is better than “small” or “town” or “romance” on their own.
Avoid repeating words already used in your title, subtitle, author name, or category. Amazon already indexes those. Repetition wastes valuable space.
Do not include terms like “Amazon,” “KU,” “Kindle,” “bestseller,” “ebook,” or “free.” Also, don’t include brand names or trademarks, including other authors’ names. Avoid irrelevant keywords, even if they are popular.
Think of each keyword box as an opportunity to describe your book from a slightly different angle. One might focus on trope, another on setting, another on heat level or emotional tone.
Examples of well-formatted keyword phrases include enemies to lovers small town romance, spicy firefighter romance, single mom second chance love story, or cozy romantic mystery series.
Common Amazon Keyword Mistakes Romance Authors Make
One common mistake is being too vague. Keywords like “romance novel” or “love story” are so broad they are almost useless. They do not help Amazon narrow down who should see your book. This includes sub-categories, such as “contemporary romance” or “paranormal romance.”
Another mistake is being too clever or poetic. Keywords are not the place for metaphor or symbolism. These are words readers use to find books like yours.
Chasing trends that do not fit your book is another issue. If your book is not actually a dark romance, using dark romance keywords will attract the wrong readers, which can lead to bad reviews.
Ignoring heat level expectations is also risky. Readers care about this. Sweet readers don’t want to find spicy bits. Steamy readers want steam. Using keywords that signal heat level helps avoid disappointment.
Don’t use words that go against Amazon’s guidelines and TOS, such as “Amazon,” “KU,” “Kindle,” “bestseller,” “ebook,” or “free,” or brand names or trademarks, including other authors’ names.
Finally, many authors think keywords are set ’em and forget ’em. They are not. You can change them at any time. Keyword optimization is ongoing, not a one-time decision.
How Often Should You Update Your Amazon Keywords
At a minimum, keywords should be set at launch. After that, consider reviewing them after 30 to 60 days, once you have some sales data or advertising feedback.
You may also want to update keywords if you change your cover, rewrite your blurb, relaunch a book, move between Kindle Unlimited and wide distribution, or notice a shift in your audience.
Small adjustments over time are usually more effective than constant tweaking. Think of keyword updates as maintenance every quarter or half-year.
Tools That Can Help with Amazon Keyword Research
While you can do keyword research manually, there are tools that can make the process faster and more data-driven.
Publisher Rocket is one of the most popular tools among indie authors. It allows you to research keywords and see estimated search volume, competition, and related terms. For romance authors, this can be especially useful for evaluating trope-based phrases and seeing how competitive certain keywords are. It supports Amazon in other markets (other countries) and can help with keywords for Amazon Ads ($199 lifetime as of this writing 2/2026).
KDSpy provides much the same as Publisher Rocke, in that it gives insights into category competition and keyword trends. It includes browser integration so you can use it while on Amazon. (Normally $197, but as of this writing, $79 – 2/2026).
These tools are optional. They are most helpful when you want to scale ads, optimize a backlist, or make data-based decisions. If you’re completely lost on how to choose keywords, they can get you started.
It’s important to remember that tools do not replace understanding your genre. A keyword with high search volume is not automatically a good fit if it does not match your book’s promise.
Amazon keywords are not about gaming the system or chasing algorithms. They are about telling Amazon what your book is and telling readers what experience they can expect.
Romance authors already understand tropes, emotional payoff, and reader expectations. Choosing good keywords is simply translating that knowledge into a searchable language.
