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Page Intersection
This endpoint will provide you with the keywords for which specified pages rank within the same Bing SERP.
Find keywords several webpages rank for:
If you would like to get the keywords several pages rank for, you need to specify webpages only in the pages object. This way, you will receive intersected ranked keywords for the specified URLs.
Find keywords your competitors rank for but you do not:
If you would like to receive all keywords several pages rank for, but particular pages do not, you need to use the exclude_pages array as well. This way you will receive the keywords for which the URLs from the pages object rank for, but the URLs from the exclude_pages array do not.