You don't seem to understand how this forum works. We are not a replacement for a dictionary or a good grammar book. It works by you asking us specific questions about individual usage and aspects of the language.
As far as adverbs are concerned, why don't you write some example sentences using "quickly" and "feverishly" and post them here. We can then see if you are using them correctly. You must do some work yourself.
Student or Learner