Some apps try to get benefit from keyword optimization illegaly. As we all know, app title and app description are the fields that have a direct contribution to the visibility of an app. The ones who use Black Hat tactics on keywords, put a lot of irrelevant keywords that are already ranking high in the application's data and/or description. Which normally does not mean anything together. As a reminder, App Stores reject the apps that have stuffed keywords to try and disrupt Black Hat.