Munchkin Pathfinder: Factions = Races?

[vacilar]

Hi, i own Munchkin 1-8, Munchkin Pathfinder, Conan & Legends.

I searched the FAQ and the manuals of many times, but found no answer for a short question:

Pathfinder has four factions included, but no Races: Eagle Knight, Hellknight, Red Mantis Assassin & Pathfinder. Are they the equivalent to the Races in the other Munchkin games or are they a additional ability for a munchkin like the birthright in Conan ?

Thanks in advance