Keywords
How to Build a Keyword Set
A repeatable five-step process for turning one topic into an organised, usable keyword set.
6 min read
Start with one honest seed
Every good keyword set starts with a seed you can actually write about. 'Food' is not a seed; 'meal prep for shift workers' is. The narrower your seed, the more usable everything downstream becomes, because generic seeds produce generic expansions that could belong to anyone.
Write your seed as the phrase a real person would say out loud. If you would not use it in conversation with a customer, it is probably too abstract to build on.
Expand before you judge
Expansion and evaluation are different jobs, and doing them at once slows both down. Run your seed through an expansion tool and accept everything it gives you on the first pass. Add long-tail phrases and questions in the same sitting so you have breadth to work with.
Only once you have sixty or eighty candidates should you start deleting. Judging each idea as it appears leads to a small, safe list that mirrors what you already believed.
Clean, then cluster
Raw expansion output is messy: duplicates, awkward grammar, stray punctuation. Clean it first so clustering has something consistent to work with. Deduplicate case-insensitively, strip punctuation and collapse whitespace.
Then group the survivors. Clustering by shared head word is a transparent heuristic that shows you which themes dominate your list — and, just as usefully, which themes you have barely covered.
Assign each cluster a job
A keyword set is only useful when each part has a destination. Head terms usually belong on category or pillar pages. Long-tail phrases map to individual articles. Questions become section headings or FAQ entries.
Write the destination next to each cluster before you close the document. A list without destinations gets rediscovered in six months and rebuilt from scratch.
Save it somewhere you will look again
Store the finished set as a named collection and export a copy. Name it after the project and the month, not 'keywords final v2'. When you revisit the topic, you want to extend the existing set rather than repeat the whole process.
Frequently asked questions
- How big should a keyword set be?
- Large enough to cover your topic and small enough to act on — thirty to eighty terms per topic is a workable range for most projects.
- Do I need search volume data?
- It helps when you have reliable access to it, but a well-organised set built on real audience language is useful without it.