Is the primary keyword the same as the main keyword on Amazon?

Yes, these terms are used interchangeably. The primary keyword, main keyword, or focus keyword all refer to the single most important search term for a listing: the highest-volume, most relevant term that goes in the product title and represents the core of what the listing is optimised to rank for. Some sellers also use 'head keyword' to describe the same concept. The terminology varies but the principle is consistent: one dominant keyword in the title, supported by secondary terms distributed across the rest of the listing.

Do secondary keywords on Amazon need to be in the title?

No. Secondary keywords go in bullet points, the product description and the backend Search Terms field. They do not need to appear in the title, and in most cases should not: the title has limited character space and is optimised for readability and for the primary keyword. Including secondary keywords in the title often makes it read unnaturally, which reduces click-through rate. Secondary keywords are indexed wherever they appear in the listing, so bullets and backend are the appropriate location.

What is the difference between secondary keywords and long-tail keywords on Amazon?

Long-tail keywords are a subset of secondary keywords. Long-tail keywords are phrases of three or more words that are more specific than your primary keyword and carry lower search volume. They are typically secondary keywords because their lower volume means they do not justify the primary position in your title. However, not all secondary keywords are long-tail: a secondary keyword could be a synonymous two-word phrase with substantial volume that simply is not as strong a match for your specific product as your chosen primary keyword.

How do I find secondary keywords for my Amazon listing?

The main sources of secondary keywords are keyword research tools that generate variations and related terms from a seed keyword, reverse ASIN tools that reveal the keywords competitors are indexed for, and your own search term reports showing every query that has triggered your ads. A good secondary keyword list combines high-relevance terms from these sources, prioritised by monthly search volume, and distributed across your bullets and backend until your available character and byte allowances are fully used with genuine, relevant terms.

What are primary and secondary Amazon keywords?

Primary Amazon keywords are the most important search terms for your listing: highest volume, closest product match, placed in the title. Secondary keywords are supporting terms that extend your reach through bullet points and backend Search Terms, targeting additional search queries without competing for the title's most prominent position. A primary keyword is the search term that most directly describes your product and that the greatest number of relevant shoppers use when looking for what you sell. It has the highest monthly search volume among the terms that accurately match your product, and it goes in your product title, ideally within the first 40 to 50 characters where it is most visible in search results and given the greatest algorithmic weight. Each listing has one primary keyword. The primary keyword defines the core of what your listing is about in Amazon's eyes. All the algorithm's other relevance assessments are made in context of this central term: your listing's conversion rate for this keyword, the sales velocity associated with it, and the click-through rate it generates all feed back into how strongly Amazon associates your listing with it. Secondary keywords are all the relevant search terms your listing should rank for beyond the primary keyword. They include long-tail variations of your primary term, synonyms and alternative phrasings shoppers use for the same product, attribute-specific terms (by colour, size, material, use case), and complementary use case terms that broaden your audience without misrepresenting your product. Secondary keywords are distributed across bullet points, the product description and the backend Search Terms field. Bullet points are the best location for secondary keywords that are also commercially relevant copy: terms that add context about product benefits, materials or compatibility. The backend Search Terms field is the right place for secondary keywords that do not fit naturally into visible copy: synonyms, common misspellings, and alternative category terms that expand indexation without cluttering the listing. Each listing has one primary keyword. The number of secondary keywords is not capped: you should include as many relevant secondary terms as your content can support naturally, plus fill your backend Search Terms field to as close to the 250-byte limit as possible. A well-optimised listing can be meaningfully indexed for 30 to 100 secondary keywords, covering the full range of relevant search queries from high-volume generic terms to very specific long-tail phrases. The practical limit is not the number of keywords but the quality of coverage. Every secondary keyword added to your listing should be a term a real shopper would use when looking for your product. Indexing for irrelevant terms does not help ranking: it wastes backend bytes that could be used for legitimate keywords and can dilute your listing's relevance signals for the terms that matter. Amazon indexes a keyword when it detects that term anywhere in your listing content: title, bullet points, product description or backend Search Terms. A primary keyword in the title receives stronger relevance weighting than the same keyword in the backend. A secondary keyword in a bullet point receives stronger weighting than the same keyword in the backend. Placement within the listing creates a relevance hierarchy that affects which keywords your listing ranks most strongly for, not just which keywords it is indexed for at all. Ranking for a keyword requires both indexation and performance: your listing must first be indexed for the term, and must then demonstrate sales and conversion performance for searches on that term. Primary keywords receive the most algorithmic attention from both directions, which is why choosing the right primary keyword and building organic ranking for it is the most impactful single SEO decision you make for any listing.

Primary keywords go in your Amazon title and drive most ranking. Secondary keywords support them in bullets and backend. Learn how each type works.