A secondary keyword is a related search term that supports your primary keyword by adding context, covering subtopics, and helping one page rank for a wider set of relevant queries. If your primary keyword is “email marketing software,” secondary keywords might include “email automation,” “email list segmentation,” and “A/B testing emails.”
What a secondary keyword does
Secondary keywords help search engines understand the full topic of a page. They matter because modern SEO is not about repeating one exact phrase. It is about building topical relevance. When you include closely related terms naturally in headings, body copy, image alt text, and internal links, your page can rank for more variations and match more specific search intent.
For marketers, this improves content efficiency. Instead of publishing multiple thin pages targeting near-identical phrases, you can create one stronger asset that captures broader demand and supports conversion paths more effectively.
How to choose secondary keywords
Start with the primary keyword
List the main phrase you want the page to rank for, then identify supporting terms users would expect to see on that topic. Look at autocomplete suggestions, related searches, paid search query reports, customer language, and competitor page subheadings.
Group by intent
Choose terms that match the same stage of the funnel. Informational modifiers, comparison terms, and feature-specific phrases can work together if they support one page goal. Avoid mixing unrelated intent, such as pairing a beginner guide with transactional brand-comparison terms if the page is not built to satisfy both.
Prioritize commercial usefulness
At TLSubmit, the most valuable secondary keywords are the ones that improve both discoverability and action. Favor terms tied to workflows, use cases, integrations, pricing concerns, setup steps, or measurable outcomes.
Practical example for content optimization
Suppose your primary keyword is “social media scheduling tool.” Strong secondary keywords could include “content calendar,” “bulk post scheduling,” “team approval workflow,” and “analytics dashboard.”
A practical page structure might use these terms across sections: a feature overview, a workflow explanation, a team collaboration section, and a reporting section. This helps the page rank for users searching different but related needs while keeping one clear commercial topic.
In practice, use secondary keywords in one subheading each, add them to supporting paragraphs, and align them with screenshots, FAQs, and internal links. That creates a page that is easier to rank, easier to navigate, and more useful for buyers comparing solutions.