Fine line between bottom and sub?

[thir]

As I use and understand the terms, it's about the difference between the physical and mental elements. If you love to be whipped, spanked, tied up, whatever, but still remain your own person, accepting it as something done by the top for your pleasure, you're a bottom. If what excites you is to feel controlled and dominated - whether that control is expressed by beatings, bondage, or just kneeling at your Dom(me)'s feet - you're a sub.

The truth is, that definitions are really difficult to pin down and formulate! Just ask the scientists ;-)

You say, if you like things done to you, but you are still your own person, you are a bottom?

Are subs not their own person??

Am not splitting hairs or anything like that dear Lord, but it seems important to me.

The acid test is, how do you respond to something you don't enjoy, but your partner does? If something that never attracted you before, suddenly becomes exciting because the right person is ordering you to do it or forcing it on you, you're a sub.

So, if your partner does something you cannot react to in a sexual way, you are not a sub?
Do you mean that if the sub (or whatever) can do it gladly, or want to endure, even if it is something sie does not enjoy, sie is a sub?
I think demanding a sexual response is a bit much to ask?