What is the difference between social share and social follow buttons in the drag-and-drop editor?

In the drag-and-drop editor you will find two built-in social options. What is the difference, you ask?

Social Share

Provides buttons to the recipients of an email to share the email to their social network. This activity is tracked in reports as "Social Shares" and "Impressions". Available social networks are: Facebook, Twitter, LinkedIn, and Pinterest. You can also share via email.

Social Follow

Provides buttons to the recipients of an email that are linked to your social network page. This activity will be tracked in click reporting of the sent email. Available social networks are: Facebook, Twitter, LinkedIn, , Pinterest, Instagram, and YouTube.