Surprising but welcome: Some of us are fine with technical terms, others have their eyes glaze over. Using common slang makes the polysyllabic immediately apprehensible.
(I laughed too. Especially considering taint t'aint been a word all that long, eh?)
"gooch"? Am I a square for never having heard that?
Depends? Playing baseball and getting hit in the gooch with a bad bounce is common occurrence. If you never played baseball or a sport where you are not gratuitously hit by object or person the gooch isn't really in the popular vernacular. Come to think of it, I wonder what Cricket players call it... lol.