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In comparing the Multiple Product Pages, note that whereas both The Furniture Store and The Jewelry Shop have a category specific image displaying at the top of the main content area, only the latter theme offers to activate/deactivate this from the theme settings. Note also that The Clothes Shop offers only the optional category description but not the image.
Finally see how The Clothes Shop does not natively have a setting for displaying child category descriptions on hover (The Furniture Store ) or below the image (The Jewelry Shop).