Interesting to hear about all your discoveries. What is bhooning? i assume you mean the technique associated to bhuna dishes, where you reduce the sauce down and fry spices in the remaining oil? or do you mean something i have missed?
As I understand it, "bhoona" (however you choose to spell it) is the basic (and traditional) Indian cooking process of frying powdered spices (or a paste of powdered spices), in hot oil, to release their essential oils and to cook the rawness out of them. It is what you are (or should be) doing, at the initial stages of cooking a BIR curry, before you add liquids such as tomato paste, curry base, etc. Adding the liquids "quenches" the process and prevents the spices from burning.
The main dish "bhoona" derives its name from this process (it is really a process, not a curry) because it is a dry dish cooked in this manner.
A similar process is "bargar" (or vagaar") whereby whole spices are fried, in hot oil, to achieve the same effect. It is what you are (or should be) doing when you make something like pilau rice using whole spices. Or a curry base using whole spices. Or a main dish using whole spices.
I think these are two main processes that people should have in mind (amongst others) when they think (or talk) about "technique". Both are basic, essential, traditional techniques for extracting maximum flavour, and removing rawness, from the spices.