Facebook and Google+ both are same face of a coin in the race of Social Media Networking Sites. Facebook is the older one with respect to Google+. Both have many features common like:
1. There is no dislike button in both of them.
2. There is video calling facility in both the sites. Facebook has Skype and Google+ has Hangout.
In Facebook you can add your friends and even in Google+ too you can add your friends. But Google+ has "Circles". So you can categorize your friends and relatives in Circles. This is the only difference between Google+ and Facebook.
Still Google+ is the Beta Version available in the market. Google+ is officially not open for everyone. For Google+ account you need an invitation.
This is my Google+ reference id
This is all about my own experience.