Feed section will show you the posts of users for whom you are following and your posts.
Stream section it shows the posts of all users. Global stream posts.
Popular section it shows 50 posts sorted by popularity. We can say this: Top 50.
Friends section will show you the users for whom you are following.
Profile section: this is your personal profile, where you can see your posts, you can edit your personal information, change the photo or cover.
In the Messages section you can see all your conversations.
Section Notifications: Here you see the history of notifications of new likes, comments and new followers.
Virtual currency (credits)
Support Emoji in comments, private messages and posts
Followers | Following
Share My Location in posts
Posts for everyone and only for followers
Personalize your notifications
Direct Messages with images/photos (Real time)
Submitting tickets to support from application
Abuse reports to the posts and users
Facebook login|sign up|connect|disconnect
Images and photos in posts
Profile photo and cover
Push notifications about new comments, likes, followers, messages
And much more …