In lang=en terms the difference between percolate and brew
is that
percolate is to make (coffee) in a percolator while
brew is to be in a state of preparation; to be mixing, forming, or gathering.
As verbs the difference between percolate and brew
is that
percolate is to pass a liquid through a porous substance; to filter while
brew is to prepare (usually a beverage) by steeping and mingling; to concoct.
As nouns the difference between percolate and brew
is that
percolate is (rare) a liquid that has been percolated while
brew is the mixture formed by brewing; that which is brewed; a brewage.