Actually, Corey, your bread machine has a proofing cycle - it is of itself not a proofer in the general sense. A "proofer" can proof any number of products (different sizes and shapes of breads, rolls, etc.) simultaneously - your bread machine can only proof one loaf of bread at a time.
"It ain't what you don't know that gets you in trouble. It's what you know for sure that just ain't so." - Mark Twain