Affiliate term explained

Usually called an affiliate site that not gives the users additional useful information compared to another site of the same owner.

If the search algorithms or the assessor has determined that a few websites present in the search results, are the property of one owner and provide the same information, even without repeating each other (for example, several online stores a single firm), the search engine decides which sites to show in search results for a particular query.

Such action Google SEOs called a affiliate filter.