• Shepherd (導師 doushi, "Guiding Person")
  Based on the dictionary, a Shepherd is someone who tends and rears sheep. According to the King James Bible, a line wrote "Lord is my shepherd" According to this context, it is a metaphor to show how God (shepherd) watches over and guides humanity (sheep).
  
  
• Seraphim (天族 tenzoku, "Divine Tribe")
  Seraphim are a type of a heavenly being present in Christianity and Judaism. They are the highest-ranking angels in Christian angelic hierarchy but are ranked fifth out of ten in Jewish angelic hierarchy.
  
  
• Hellions (憑魔 hyouma, "Possessing Evil")
  Hellion is an alteration of the word "Hell". The word hellion means "an unruly, rowdy or mischievous person" or "an evil being".
  
  
• Malevolence (穢れ kegare, "Uncleanliness")
  Someone who shows malevolence is someone who exhibits hostile attitude.

Here are some comparisons between the Official Western Localisations and the Japanese Romanisations.

Hyland - Highland
Rolance - Lowland
Glenwood - Greenwood

English version of the Normin names:

Japanese romanisation of the Normin names:

In my opinion, I think it would have been better if they straight away romanise the already existing Japanese terms for the Normin names. Even though it may be uncreative that way, I think it would help me to remember all those skill names and their effects better.

If you want to see the Name Comparison of the Bonus Skills, you can go here: http://www.aselia.wikia.com/wiki/ToZ_-_Skills
(the localized name will be Bolded, while the romanisation version will be below it)