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We like to think of all pages written around a specific topic as a content silo. Many of these pages will include the same keywords for sure. The key is to choose which page is the "head" of the silo and should rank for the main phrases assigned to that silo. Then you can use all the other pages in the silo to internally link back to the main page with the proper anchor text, thereby helping the main page (and correct page) rank for the keyword. To sum up, you might end up with many pages that all include a specific keyword but you're going to internally link all of them to the main page using the keyword as the anchor text which is basically telling Google that all your pages are saying that the main page is the most relevant for that keyword.

Thanks Nozzle.