I've seen reference to this in other threads but I'm not sure if it's ever been reported as a bug. I asked Lorne the bard in Vesper what he can train me in, and "discordance" is on the list. However, the keyword to have him train me in it is "enticement". I think this would be quite confusing to any new players. If this is a duplicate bug report, I apologize.
Aye, it is a bit confusing and also known by administration. The skill tiles you can drag onto your screen also say Enticement like the skill scroll. You can mod your mul files to get over it, but until globally corrected, just a minor inconvenience.