What Planes are there?

[labmonkey]

So I've been Pathfinder for a couple months now. I've picked up a smattering of products from my local shop, including The Great Beyond.
The Great Beyond and the Pathfinder Chronicles Campaign setting list the Outer Planes the same way.
Reading Bestiary 2, which I picked up today, under the Petitioner entry some of the Planes are different.
Instead of Axis, Maelstrom and Boneyard they list Utopia, Limbo and Purgatory for those alignments instead.
Is there a reason for the different names or just the author labelling them differently?

[Blazej]

They are the same planes, it is just that Axis, Maelstrom, and Boneyard are part of Golarion's cosmology. Utopia, Limbo and Purgatory are more generic terms for rulebooks like the Bestiary 2 (And the Game Mastery Guide), which avoid using references to Golarion.

[labmonkey]

Ah, that's an answer which makes sense. Thanks for the quick reply!

[Skull]

Snakes on a plane!