Why bother learning all this jargon? Shouldn't you just concentrate on the latest innovation in your favorite opening system? A few hours working on your tactics would surely be more productive?
Well I guess the thing is the text books are full of this kind of talk. You go online somewhere and study the games of the masters, they might be annotated for you. The experts might be explaining the game as you go through it, explaining the techniques of the great players.
They might mention things like breakthrough, compensation, counterplay, dynamic, fianchetto, minority attack, outflanking, prophylaxis, static, swindle, zugzwang or zwischenzug to name but a few. When you encounter these terms as you study, it certainly would be nice to know what they mean.