The words mean to you, what you make them mean.
But what they mean to you, doesn't help me understand what you are trying to say.
You can make it work for you, but you can't communicate to me how you make it work, because I have no idea what you mean.
If nothing else, studying theories like OC and CC, allows us to standardize at least some of the definitions, and effectively communicate with others that are also familiar with those standardized definitions.
Now, if you are actually thinking about fire extinguishers, plus peas, and minus arghs while you are working a dog, you are going to be way behind the ball, with every swing you take!
But, when you have time to sit down and really think this stuff through, it helps you be able to form training plans that make sense, and are effective.