hmm, another term i'll have to put into the article
anyway, back on topic.
there is two types(unless i am mistaken). Rad ki and Trad ki.
they mean Radical and Traditional.
i'm not to sure on the definition for tradition, but radki basicly is using ki for things like ki blasts(and other DBZ inspired ki stuff).
Radki is also pretty bad for your energy system and can cause blockages and stuff.
Traditional is the better way to do ki, but i'll leave that for other more guys who have more experiance with ki to explain.