While you don't need to know each other to share posts on Twitter; people usually follow other people they want to monitor, relatives or celebrities. On both networking sites, users can express their opinions on content by replying. Both networking sites have different privacy settings. There are multiple privacy settings in Facebook to manage the privacy of your profile. One of the best privacy settings is that users can choose who sees their posts. On the other hand, Twitter only has two privacy settings. The user must share their post for the public or only for followers. Allowing fewer privacy settings makes people feel that Twitter is not as safe as Facebook. However, both networking sites allow you to connect to each other's accounts. Linking Facebook and Twitter makes it easy to share the same post on both sites. Facebook and Twitter both have their own mobile applications. These mobile applications can be downloaded for free. To chat via the Facebook mobile application, we need to download another application called Messenger, then we need to connect these two applications. However, we don't need to download any other application to use Twitter other than its own