I don't see the problem (maybe 'cause english is not my antive lang), but most of the WoW classes have the problem with loose concept or weird name in the spec names. Some examples:
Restoration Shaman / Druid: pretty close to "Restorer"
Holy Paladin / Priest: we can argue about priest having unholy specs, but paladin?
Arms Warrior: do the other warriors don't use arms?
Enhancement Shaman: because they enhance their attacks with elemental forces ¯\_(>_>)_/¯
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I think he meant Anub'arak.