Gash doesn't even really have elements, it has a language syntax system
If you pay attention, you'll note the nonsense spell words actually have actual manining in determining the spell effectl: There's a base stem that determines the "element" but these aren't necessarily elemental, like "fanon" is just "beasts" as an "element". So basic spells are just their stems, and then more complex spells have prefixes modifiers that also mean certain things ("Ganzu" mans rapid fire, for example), and then you also have suffix modifiers, like "-rugu", which means it's a transformation or power-up. Finally, there's also power indicators, lik "Gigano", "Dioga", "Shiin", ettc.
So while most characters stick to spells of the same base stem and therfore an "elements", somee characters have different spells using a same stem another character already uses with different suffiixes and prefixes, and some characters don't have their spell's based around a stem/element at all but rather a fighting style, so they have spells from a variety of different stems, like Baransha's whole deal is tiring the enemy out and misdirecting them, so she variously has spells from totally different stems that just lend itself to that fighting style. And then there's also plenty of spells that just have unique effects that don'tt fit into known spell words.
None of this is ever explained/addressed iin the series proper, which is a shame, because it would have been cool tto see how spells are "made" by the characters and seeing them trying tto mix and match words to get specific spell effects and shit, but oh wellhttp://zatchbell.wikia.com/wiki/Spell_nomenclature