What Jeff said earlier, echoed by many, is that forms, kata, hyung, kuen, drills and sets are essentially the same thing.
A lot of people, likely most people do forms incorrectly. The techniques may be performed properly in accordance with the tenets of their art, but their "form" lacks that certain something that makes it a useful "drill." Namely, the awareness of the reality of the attackers they are supposed to be facing off against.
Someone said earlier that the grappling drills they do are meant to be practiced with a partner. So what do you do when there is no partner? Do you confine your training only to times when you have a partner readily available?
In Yiliquan we are taught four different levels of breakdown to our "forms," each of which contains different applications of the techniques contained in the forms. At level one, a punch is a punch and a block is a block. At level two, a block may be a strike, and a strike may be a block. At level three, the strikes and kicks may well be joint locks, throws and sweeps. At level four we examine the target locations of the strikes, kicks, blocks, etc. for the focus on vital point striking.
So when we are doing "forms," depending on what our intention may be at the time (i.e. the reason we are practicing the form), we may be practicing chin na, shuai chiao, striking, kicking, footwork or vital point striking.
I disagree that grappling training must have a partner. It surely is a good deal more effective when you have a body handy to bend and twist, but techniques can just as easily be practiced sans partners (I believe pretty much all high school wrestling starts with the participants practicing solo drills - drills that fulfill a similar requirement for wrestling that "forms" do for traditional martial arts).
When practicing forms, you really need to "see" your opponent, know what he/she is trying to do to you, what kind(s) of technique(s) are being fired in your direction, and have a real understanding of what the "form" is trying to teach you about dealing with those attacks. In this way, "forms" become "drills," and "drills" can become "forms."
Gambarimasu.
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