Let's start with an example. There are two different search terms, "door handle" and "door handle". Some tools, whether keyword tools, aggregators, or other data acquisition tools, merge individual volume values into a single aggregated total and display this total for both keywords. For example, keywordtool.io groups keywords, but searchvolume.io does not. That's what it looks like to the United States: Table with keywords and volume values-SEJ Two things stand out immediately. advertisement Continue reading below Keyboardtool.io associates the same volume value with both keywords (plural and singular), but searchvolume.io does not. The volume value of Searchvolume.io is significantly lower than the volume value of keywordtool.io.
Let's also take a look at Ahrefs. Ahrefs ghost mannequin effect service collects data from Keyword Planner, among other sources. According to the Customer Service Department, Ahrefs will ungroup the keywords that Keyword Planner has grouped. The following table is similar to the previous table, but this time I got the same query for another country, including the data from Ahrefs. Amount of keyword data for specific keywords in two countries-SEJ Two points stand out. The Ahrefs data values show different volume values compared to both keywordtool.io and searchvolume.io. In the Netherlands, Ahrefs assigns a higher value to the singular "door handle" compared to the plural "door handle". This is the exact opposite of the value in Searchvolume.io. However, in the United States, Searchvolume.io and
Ahrefs show the same equilateral triangle distribution. If you try the query with another keyword set, you will get similar results. Tool X may indicate the maximum value, or tool Y or Z may indicate it. advertisement Continue reading below One thing is certain: the data values are scattered and question the reliability of the data values. The following table shows a set of popular keyword tools and whether they group keyword volumes. Grouping effect by tool provider_SEJ Keyword grouping In addition to volume clustering, grouping effects also apply to search terms. The first linguistic determinants of keyword grouping are the singular and plural usage of nouns. Singular and plural The Keyword Tool can group nouns