Both keyword groups and tags are different ways to segment your keywords. Whether you choose to use keyword groups, tags, or both together will depend on a few factors.

The main questions you'll want to ask yourself is "Do I expect each segment to have different competitors?" and "Do I want to track different search engines or regions with different segments?" If the answer to either of these questions is "yes", you'll want to use keyword groups.

There's more to it than this, so read on for a detailed comparison.

Similarities: 

  • Both tags and keyword groups can be used to segment, filter, and categorize keywords.
  • You can compare performance of each keyword group or tag to each other.

Some key differences:

  • Keyword groups can have different competitors and search engines - It's possible to track different search engines and competitors for each individual keyword group. This is especially useful if you want to track different keywords in different regions, but still use the same site. (e.g. track "best mexican food west village" in New York City, but "best mexican food mission district" in San Francisco.) Tags on the other hand don't change any tracking options.
  • Keyword groups are required - All keywords must be placed in at least one group. Tags are completely optional.
  • Competitor Discovery works per keyword group - Competitor Discovery will automatically find the top 50 ranking domains in each keyword group and search engine combination. This is very useful if you expect to have different competitors for different sets of keywords. You can uncover the most relevant keywords by segmenting your keywords by group. Tags don't have this functionality.
  • Unlimited tags per keyword - You can add as many tags to a keyword as you'd like. In contrast, putting the same keyword into multiple keyword groups will cost you multiple keyword credits, and is generally not recommended if you're tracking the same search engines and competitors in each keyword group.

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