QSR: Quick Service Restaurant...think "fast food" but with more pride.
Store: Easier to say, so is substituted for "restaurant."
PNL-P&L-P/L: Profit and Loss Statement. The method a restaurant figures out if it's making money, and how.
KBI-KPI: Key Business Items, Key Performance Items. Things like sales, sales growth, service times, labor cost that can help determine a restaurant's performance.
