In the first example “shoes” is in every keyword, so it isn’t used for grouping: one group of everything wouldn’t help. The tool says which words it left out. “Shoe” and “shoes”, “men” and “mens” count as the same word, and little words like “for” and “the” are never a group.
How the keyword grouping works
- The word shared by the most keywords becomes the first group, then the next, until no word is shared by enough keywords (2 unless you choose more).
- Each keyword goes in one group only, so the groups can become ad groups without the same keyword bidding against itself.
- If a big group took the only partner of another keyword, that keyword borrows it back, as long as the big group stays big enough. That’s why “nike running shoes” went to nike in the first example.
- Keywords that share nothing with the rest go last, under Other.
- Two words next to each other makes smaller, tighter groups (“trail shoes for men” and “mens trail shoes” share men and trail), then groups what’s left by one word.
Keyword Planner, Search Console and spreadsheets
Copy the rows from Google Ads Keyword Planner, Search Console’s query report, Semrush, Ahrefs or any spreadsheet and paste them, heading row and all. The tool finds the column called Keyword (or Query, or Top queries) and leaves the other columns exactly as they were. When there’s a search volume column (Avg. monthly searches, Volume, or Impressions), each group’s searches are added up and the most searched groups come first.
Choose in a first column, for a spreadsheet to get a Group column in front of every row: paste it back into Excel or Google Sheets, or use it as the Ad group column in Google Ads Editor.
Is this keyword clustering?
It’s clustering by words, which is quick, free and private, and is how ad groups are usually built. Some paid SEO tools instead cluster by search results: two keywords go together when Google shows the same pages for both, so “cheap flights” and “low cost airfare” can share a group even with no word in common. That needs a live Google search for every keyword. For most lists, grouping by words gets you most of the way there, and you can move the odd keyword by hand.
Next steps
Use the Keyword Wrapper to put each group in [exact] or "phrase" match, remove duplicates first if your list came from several tools, or count words to see which words come up most.
A keyword list
running shoes for men running shoes for women trail running shoes waterproof trail shoes nike running shoes nike air max shoe stores near me running shoe store near me kids shoes
running (2) running shoes for men running shoes for women trail (2) trail running shoes waterproof trail shoes nike (2) nike running shoes nike air max store (2) shoe stores near me running shoe store near me Other (1) kids shoes
From Keyword Planner, most searched group first
Keyword Avg. monthly searches cheap flights 90500 cheap flights to paris 2900 flights to paris 12100 paris hotels 22200 cheap hotels in paris 1900 hotels near eiffel tower 1300
Group Keyword Avg. monthly searches cheap cheap flights 90500 cheap cheap flights to paris 2900 hotels paris hotels 22200 hotels hotels near eiffel tower 1300 paris flights to paris 12100 paris cheap hotels in paris 1900
Tighter groups: two words
mens running shoes running shoes for men womens running shoes running shoes for women mens trail shoes trail shoes for men waterproof trail shoes
men running (2) mens running shoes running shoes for men women running (2) womens running shoes running shoes for women men trail (2) mens trail shoes trail shoes for men Other (1) waterproof trail shoes
Questions
Why is a word in nearly every keyword left out?
Because a group of everything isn’t useful. If you sell running shoes, “shoes” is in every keyword; the groups worth having are the words that tell keywords apart: trail, nike, women. Untick the box to group by it anyway.
Can one keyword be in two groups?
No. Each keyword goes in one group, so you can turn the groups straight into ad groups or pages without the same keyword competing with itself.
How many keywords can it handle?
Thousands. It runs in your browser, so a list of 10,000 keywords takes a moment, not minutes.
Is my keyword list uploaded?
No. Everything happens in your browser; your keywords never leave your computer.