What is the difference between Duplicate Reduction and Duplicate Suppression?

Duplicate reduction is the act of removing a listing through API. Although this manual process takes longer than suppression, it’s permanent. This is how Chatmeter removes duplicates. Duplicate suppression is a way of hiding your listings on some of the major search engines and directories like Google, Bing, Yelp, and Facebook. Unlike reduction, duplicate suppression is not a permanent solution and doesn’t do anything to help your rankings.