Feat: Orc Weapon Expertise

[ChaoticNeutral]

Benefit: When you take this feat, choose one of the benefits below. Whenever you wield a weapon that has “orc” in its name, you gain the benefit you chose so long as you are actually proficient with that weapon.

This feat seems to indicate that there is more than one "Orc" weapon. If that is the case, in what books can I find other "Orc" weapons besides the Orc Double Axe. If the wording was only an attempt to preemptively dodge an errata why haven't any other "Orc" weapons been added in the two years after this feat's release in Pathfinder Roleplaying Game Advanced Race Guide?

[GinoA]

That wording is probably just to be consistent with the elven and dwarven wording of similar feats/traits/features/...

Also, it covers their, ahems, if they ever introduce a new orc weapon.