Soulstone Trial Tickets

How confusing! Why are tickets to be used for the Spirit Stone Trials named "Soulstone Trial Tickets"?

There is no such thing as a soulstone trial! And Soulstones are nothing like Spirit Stones. Two whole different kind of materials in the (same) game.

I recommend a name change of the tickets, and at the Spirit Stone Trial to: "Spirit Stone Trial Tickets".