There are 2 zones in Azeroth, as well as many in outland which are specifically designed for world PvP; Silithus and Eastern Plaguelands. In outland, Hellfire Peninsula, Terrokar, Nagrand, and Zangamarsh all have PvP objectives. Each has specific objectives and rewards for achieving said objectives.
Hellfire Peninsula
The Hellfire PvP objectives are west of the Hellfire Citadel in the middle of the map. There are 3 locations, which can be captured. Unlike nodes in AB/AV, or flags in WSG, the nodes are captured by being the superior faction within the area. This means having more of you players than your opponents do. You will see a small bar when you come in range – on the left is the alliance, on the right the horde. It will progress faster or slower depending on how many people you have in range.
Capturing all 3 locations will give that faction a zonewide buff, known as Hellfire Superiority. This increases all damage caused by 5%, and is quite handy to have, especially for running difficult or heroic instances where every bit of damage helps.
You also get special battle tokens which can be turned into a PvP vendor in Thrallmar/Honor Hold, for items/
Zangamarsh
The Zangamarsh PvP objective is very similar to that in Hellfire, with the location being just south of the giant lake where the Coilfang instances are housed. The buff for holding all 3 also grants 5% increased damage.

Terrokar Forest
Terrokar is probably the most important PvP objective, because it is slightly different from the others. In the dead area around Auchindoun, there are 5 towers, which work in the same way as the other objectives in the other zones. However, once they are captured, a timer begins, and they cannot be recaptured for another 8 hours. The countdown to the time when they can change hands usually results in some furious PvP activity.
The important aspect of Terrokar PvP objectives is that it provides a buff, just like the other zones. You get 5% increased damage, but additionally when your faction has the buff, you will be able to collect spirit shards from bosses in Auchindoun. Without the buff, you aren’t guaranteed any spirit shards off the bosses, but with it each boss will drop at least 1, depending on the instance and whether it is the final boss.
Spirit Shards can be exchanged for items at a vendor in Auchindoun. Each class has a blue quality helm available at lvl 66, but more importantly, there are 2 epic rings, which cost 50 spirit shards – one for offensive casters and one for offensive melee. There are also gems which can be bought, but they are rather lacklustre. If you are a caster or melee DpS, definitely save your shards for an excellent ring.
Nagrand
The PvP in Nagrand is different again, with the objective this time being Halaa. Halaa is a town in the middle of the map, and whoever controls the town can use it, while the guards will attack the other faction. Holding Halaa provides a convenience factor more than anything else – it makes it much easier to traverse Nagrand, especially for those questing in the area.
Taking Halaa is not like the other objectives – you have to kill the guards, and not by normal means. You need to fly gryphons and throw bombs – similar to one of the first quests you complete in Outland. Once 15 guards are dead, you can take over the town for your faction.

While PvPing in and around Halaa, each honor kill will grant you a Halaa battle token. These, along with Halaa research tokens (which you receive for handing in 20 of a specific item that drops off all mobs in halaa) can be traded in for gear. 500 Battle tokens will net you an epic gem which provides 10 resilience rating. There are also blue leg pieces for most classes and specs.
General World PvP
General world PvP is more the PvP that occurs while you are levelling, as opposed to the organised PvP of battlegrounds. It will generally occur when you are wounded or fighting a mob – this is known as ganking.