"Score" reflects a keyword’s overall ability to drive search traffic to a listing. A keyword with a Score close to 100 means a greater ability to drive sales. “Position” reflects how well a product ranks for that keyword. A keyword's Position should be closer to one as it indicates where your product ranks on a search results page when this keyword is used.
"Estimated Sales" takes a keyword's Score and Position, and projects the number of sales per month driven by this keyword per month. A low position for a highly rated keyword reflects an optimal combination likely to result in a higher estimated sales per month.

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