I have a French AZERTY keyboard with a Backspace key (that can be modified with Fn into Delete) and to my surprise I saw on the Apple Store that the English QWERTY keyboard had a Delete key in its place, so I'm wondering if it's really a Delete key (erase right) that can be modified with Fn into Backspace, or not. Edit: If I try on the virtual keyboard with American layout, the key does erase left.
On the English QWERTY keyboards, the Delete key functions as a Backspace key, and can be turned into an erase right key with the fn modified key.
The Delete (delete forward) key, when standalone, is called Del on both Mac and PC keyboards. Of the 6 keyboards I have convenient here (1 each full size and laptop PC, 2 full-size and 2 laptop Mac), the delete-backwards key is called Backspace on the PC keyboards and Delete on the Macs. (The Del key is called that on all the keyboards that have it or a marker for it.)
Pedantically, the Macs are correct, as the concept of "backspace" doesn't include erasing but the Backspace / Delete key does erase.