What is the difference between metrological verification and metrological calibration?

Measurement calibration refers to the assessment or confirmation of the measurement performance of measuring instruments to fully meet the requirements of the measurement and verification procedures, to determine whether it is qualified for all the work carried out.

Measurement calibration refers to the prescribed conditions, to determine the measuring instrument or measurement system indicated by the value, or physical gage or reference material represented by the value, and the corresponding by the standard reproduced by the relationship between the value of a group of operations.