The 36/36 warranty is the New Car Factory Warranty which covers everything Bumper to Bumper.
After the new car factory warranty expires, you can buy an Extended warranty which will cover everything upto whatever time they give you, think of this one as your new car factory warranty which comes with new car but extended for a longer time.

The Power-train warranty only covers most of the Trasmission parts and Engines components upto 100K on every Honda.