I too wish I could help but I have no idea of what the questioner is seeking.
The only derivation that I have ever heard of is the process of forming a new word on the basis of an existing word. Unhappy from happy, closeness from close, etc.
BePleased, are you confusing inflection with stress?
The opposite of derivation is - according to Wikipedia - inflection. Here's a
In English - although in certain instances you would stress certain words in a sentence to give emphasis - you don't really need to stress any words in any sentence in order for the meaning of the sentence to get across to the listener. If in doubt about which words to stress in a sentence, don't stress any words, and the meaning will still get across to the listener.