What is Retesting, Regression testing, White box and black testing difference,what is mean by smoke and sanity testing, Do you know about walk through

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Retesting, regression, white box and black box testing, smoke and sanity testing, and walkthroughs are all important testing concepts.

Retesting involves testing a previously failed test case again after the defect has been fixed.
Regression testing involves testing the entire system after changes have been made to ensure that no new defects have been introduced.
White box testing involves testing the internal structure of the system, while black box testing involves testing the system from an external perspective.
Smoke testing is a quick test to ensure that the system is stable enough for further testing, while sanity testing is a quick test to ensure that the major functionality of the system is working.
Walkthroughs involve a group of people reviewing a document or code to identify defects and improve quality.

What is Retesting, Regression testing, White box and black testing difference,what is mean by smoke and sanity testing, Do you know about walk through

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