In the Japanese version, materia names use the same style as spells, which sometimes confuses me. It would be nice to have an option to change the naming style.
Materia → Materira → Materida → Materiga → Materija → Hi-Materija → Mega-Materija → X-Materija → Omega-Materija → Ultimaterija → Hi-Omega-Materija → Hi-Ultimaterija