The warranty actually covers the entire powertrain, which is essentially the assembly of mechanical parts that propels your vehicle forward. Key components include your engine, driveshaft, transmission, axles, and differential. A powertrain warranty will cover the repair or replacement of all parts associated with these systems.
Your new Honda also came with a 36-month, 36,000-mile limited warranty. That warranty covers bumper-to-bumper repairs on components outside your powertrain.