Conversions –

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This gives you some additional information around your conversions – specifically a breakdown by conversion name or purpose.
Destination URL – This report shows you how specific destination URLs within your campaign are performing.
Demographic – This applies to certain sites on the content network that collect demographic data, and shows you the breakdown of how different demographics are responding to your campaigns.
Geographic – This report lets you slice and dice data by geography so you can better allocate your funds across different countries, states, etc.
Search Terms – This is effectively a search query report, and shows the same data you would get via a query report in the keywords tab.
Automatic Placements – This report shows you the placements your site is being placed on on the content network – it’s a bit like a Whatsapp Mobile Number List search query report for content and display campaigns.

Free Clicks – The free clicks tab is something Google calls the ad interactions report, and shows you how people interact with different components of your ad, such as “get directions” or the product extensions ad plusbox.

Call Details – This report shows you actual data from the call metrics feature assuming you’ve enabled it, such as durations and area codes of calls.
Last week we concluded our blog series on AdWords Ad Extensions with a post on Google AdWords Call Extensions, and got an excellent question in the comments of that initial post:

Thanks for the information! I have always received conflicting information from the Google AdWords reps regarding running multiple ad extensions at a time. How does Google decide what to display if you have sitelink ads, product extensions, and call extensions all running on the same campaign? It doesn’t appear that more than one extension can be displayed at one time. Is there a disadvantage to running multiple extensions in a single campaign.