Difference between retesting and regression Testing

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Retesting is testing the same functionality again after fixing defects. Regression testing is testing the unchanged functionality to ensure it still works.

Retesting is done to ensure that the defects found in the previous testing cycle have been fixed.
Regression testing is done to ensure that the changes made to the software have not affected the existing functionality.
Retesting is done after the defects have been fixed, while regression testing is done after changes have been made to the software.
Retesting is a subset of regression testing.
Example of retesting: Testing a login functionality after fixing a defect that prevented users from logging in.
Example of regression testing: Testing the search functionality after adding a new feature to the software.

Difference between retesting and regression Testing

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