The plugin collects statistics for each ad and each place.
List of advertisers – it is a virtual list because it does not exist by itself, but is a compilation of all the advertisers of all the existing ads.
The Block is acts as the collector. Simply put, it is a grid, each element of which is the output object of plugin (Place, Ad or Zone).
This is the list of Blocks created by you.
Zone is an object that acts as a selector of Ads Places.