Unique Clicks is the total number of unique people who have clicked ads in your campaign.
Clicks is the number of clicks to your site.
Reach refers to the number of people your ads were shown to.
Impressions is the number of times your ads are shown. Over a period of time, a given person will be shown the ad multiple times, on various devices.
Frequency is the average number of times each person saw your ads.
Unique Click Through Rate refers to the number of people who clicked on your ads, divided by the number of people you reached.
Click Through Rate is clicks divided by impressions, so it tells you how frequently the ad was clicked on each time it was shown.
Revenue is the total revenue attributed to ads in your campaign.
Click Revenue is the total revenue after people clicked on ads.
View Revenue is the total revenue after people saw ads.
Orders refers to the total number of orders attributed to ads in your campaign.
Click Orders is the number of orders after people clicked on ads.
View Orders is the number of orders after people saw ads.
Total Spent on Ads is the total amount spent on Facebook advertising.
Total Charged is the amount you have been billed for the campaign. The total charged is more than the Total Spent on Ads because it includes our fee and enough ad spend to last approximately one week.