An often overlooked rule is the fact that there is no limit to the number of possible Elemental Qualities available to a Wizard. Those listed in the rulebook are merely examples.
A Wizard may take and/or use any Elemental Quality they can think of, and it can be as physical or abstract as desired. They will automatically have this Word, as with any other, at their Base Competence Rank, but may also improve it with Spell Points.
Wizards are encouraged to use foreign-sounding words to represent these concepts so as to reduce the possibility of firing off spells in the course of normal conversation.