Difference between Regression Testing and Retesting

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Regression testing is testing the entire system after making changes while retesting is testing a specific bug fix.

Regression testing ensures that changes made to the system do not affect the existing functionality.
Retesting ensures that a specific bug or issue has been fixed and does not occur again.
Regression testing is performed after every change while retesting is performed after a bug fix.
Regression testing is time-consuming while retesting is relatively quick.
Example of regression testing: testing the entire system after adding a new feature.
Example of retesting: testing a specific bug fix to ensure it has been resolved.

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