I was thinking about this and i find the word corruption off-putting, why just not got with playerkiller state and deaths should be "unjustified" and "justified".
Or maybe blend it in together with the corruption word, if there is a court where of players decides the penalty for x person who's been killing unjustified then the words would be meaningful and important.
As there is not a lot of information how the PvP mechanics will play out I'm just putting this out here

Just a thought,