Re: What is an "advanced technique?"
I don't speak Japanese at all. But my understanding of what kata gatame actually means basically would be accurate for the judo or aikido version of the technique.
I can't think of the terminology right now, but there's at least two techniques that I've encountered in different styles (of martial arts, not just aikido), that are completely different, have the same name, and whose translation makes sense for both. I like to train with all sorts wen I travel and I am just trying to get a grasp on how people do things differently so I can 'fit in' better at dojo I visit, do things their way (very difficult and rewarding to un-program from what you are used to), and understand what the heck they are talking about!