Buffer inventory level is the inventory held to deal with uncertainty in customer demand or deliveries of supplies
Productivity is the output measured against the input used to create it
Lean production is a term for those techniques used by businesses to cut down on waste and therefore increase efficiency
Kaizen is a Japanese term meaning in continuous improvement through the elimination of waste
JUST IN TIME is a production method that involves reducing or virtually eliminating the need to hold inventories of raw materials of the finished product