A system and method are disclosed for categorizing search terms. The system accesses search history for the search terms. The system also categorizes each of the search terms based on the number of times that the respective search term appears in the search history. If the number of times the search term appears in the search history exceeds a first threshold, a search result of the search term is determined and the search term is categorized as a type that is provided for registration to a user with recognized association with the search term or a type that is excluded from registration, where the categorizing based on a ratio of a number of times the search result was selected subsequent to receiving the search term to the number of times that the search term appears in the search history.