Editing to shorten the answer some.
Ok, I showed my friend from Google this pic over the Thanksgiving Holiday and this is what he had to say.
To me it makes sense. So anyhow let's get to it.
You have a website.
The website has 5 pages and the following are the names of the pages.
Home, About, Services, Quote and Contact.
Of these 5 pages, what is considered to be the home page, the main page or the starting page?
I think we all can agree it is the page named "Home Page".
With that just keep in mind, that a Main page, a Home page and a Starting page are describing the exact same thing but using a different name.
There is one exception and this is what makes the term Starting Page different,
In short, a Starting Page is the actual Home Page, a secondary page or a set of pages now being considered a Home/Main Page, based on visitors behavior.
In the green column - The Starting Pages
You have the number of user sessions for the Home Page and other pages that are viewed/used as a Home / Main Page. The most visited being the Home Page (root domain name) followed by the other pages named.
In the white column - The Landing Pages
You have the user sessions and the pages they first entered the site no matter the source of entry.
So now that we know the Starting Page is the actual or conceptual Home Page and it can be one page or many pages let's view this sites data.
Due to users flow, it is deemed that the Home Page, Inventory W and D, Car, Specials are all considered a Home / Main Page and are now also Called Starting Pages.
Keep remembering Starting Pages, are just different names for my Home Pages because users treat them as such.
For this Car Lot, 36k visited the actual Home Page(A Starting Page) and
30k of them did so at entry Home Page = Starting Page and Landing Page.
Of the 5.3k that visited the Inventory D page(Named a Starting Page because it is used like a Home Page), 4.9k of them did so as their Landing Page. (reconfirming its being used like a Home Page, Landing Page / Starting Page.)
I think by this time it should be making sense and you can see how the numbers do add up when all things considered.
It's kind of weird. Anyhow that is what I learned and wanted to share it.