>>937620296I understand English fluently, I'm just lazy in my implementation of it.
You felt the need to expand on and repeat my post, that is derivative. If you had copied me verbatim that would be plagiarism, which is what you have seemingly mistaken me calling you derivative for.
Your post derived from my post, with slight changes that expand on it sure, but it is still a derivation of my post.
Your post was to my post, what cocaine is to a coca plant.