Personal Skill in English has been changed to "Learned Skill" and Unique Skill has been changed to "Personal Skill". This is a change in notation only.
Character-specific skills have been called "Personal Skill" since FE14. I think it fits the current system better than calling it "Unique Skill". The Japanese name should have been changed as well, but it was not changed because no suitable Kanji characters could be found to use in this game.
