title_body: What is the difference between the terms percolation and brewing in English?
upvoted_answer: Brewing is a part of every coffee preparation method: it's the time when the water (or steam) is in contact with the grounds. It is a generic term.
  
  Percolation however, would only be used when making percolator coffee. You would not talk about percolation time when making espresso, for example. I would not use it as a generic term.