While not exactly judo terms in the formal sense, balance and posture are foundational terms you should be aware of and strive to perfect. Why you ask? Think of jundgo and how balance and posture fit into that thinking. Then ponder on the meaning of those words for judo. You may find some interesting thoughts occuring.  Still trying to determine what to put here. Visit the links page for a judo site with lots of resoucrces.