Regression testing involves re-running the previously run tests to find out if the already tested faults have re-occurred or new faults have been introduced. Re-testing may not involve running previously run tests or it could involve new testing methods
RE-TESTING: we check for the particular bug and its dependencies after it is said to be fixed.
REGRESSION TESTING : We check the entire system whether the fixed bug make any adverse effect in the existing system or not.
Re- test :-
Regression Testing :-