K P I & Metrics
A Key Performance Indicator is the name of an aspect of business operation that needs to be monitored because it defines good/poor performance, thus affecting profitability.
Example: Delivery Timeliness (how late/timely our customer deliveries are)
A Metric is a way of defining a KPI so specifically and quantitatively that a single number may represent its current level of performance.
Example for Delivery Timeliness:
% of shipped units delivered past the expected delivery time (= 12)