Search keyword generation

A method includes acquiring application data for applications. The application data specifies an application category and includes application words that describe the application. The method includes determining, for each application word, a global fraction value that indicates the fraction of applications with the application word, a category fraction value that indicates the fraction of applications in the category with the application word, and a ratio value that indicates the ratio of the category fraction value to the global fraction value. The method includes classifying application words as categorical words when the ratio value is greater than a ratio threshold. The method includes identifying similar applications and setting categorical words as categorical search keywords for applications when the categorical words are in greater than a threshold number of similar applications. The method further includes receiving a query and generating search results based on matches between the query and categorical search keywords.