PvP
PvP is one of the main parts of the game. And why most people play the game to begin with.
Its highly skill based, fast paced, tactical and fun.
Killing other players
You can kill anyone at any place if your stance is set to it. But there might be alignment penalties for you depending on where you are, what races you and your opponent are and your opponents alignment. Beside from alignment penalties guard towers might start shooting at you making it hard to do the kill. See more on alignment page.
Ganking
When someone has been killed, you can gank them (key X per default). This will release them to their bindstone and you can loot what they drop.
It also prevents people from being revived.
They can drop a trophy head with their name and who ganked them plus when it was done.
Decapacitation
Sometimes the final blow of a melee weapon can auto-gank the player. This is called decapacitation.
Manipulation spells/skills
Manipulation does not work on monsters, but it does work on players. With manipulation is meant skills like seize and spells like begone. Something that moves or hinders movement.
Where to find PvP?
Sieges, villages, good monster spawns, fortresses, go raid another clans holding, dungeons, public mines and grooves, randomly in the wilderness etc etc.