PFI and EFI are two different names for the same thing. It's probably just because you're looking at two different sites.

PFI stands for Port Fuel Injection which means you have a fuel injector in each runner on the intake manifold. EFI means Electronic Fuel Injection, as in the fuel injection is controlled electronically. The official name Honda gives its fuel injection system is actually PGM-FI, and it is an electronic port fuel injection system.