What is the difference between a defect and a failure?

A defect is a flaw in the completeness of an intended product which while it may still function or perform the intended purpose, there will be a reduced effectiveness or constant hitches due to the flaw. A failure is a complete lack of realization or achievement of product quality or form thus rendering it useless in performing the intended function.

If any Mistake is done while coding its a failure, but the same is found by the tester then it will be the defect which will be accepted by the developer.

Defect is an error made by a machine or human which is lacking of something or negligence.If this is often practiced by an employee,then it would be a failure on everyone.

functional error found during testing is defect, if not removed and passed on to client is called failure

A deviation from the required behavior found by tester during testing is defect. If the defect reaches the customer without being detected and is found by client, it becomes a failure

The deffct. Both area have possible damages,the failure the machenm maybe lock of maintenance

When a defect reaches the end customer it is called a failure and if the defect is detected internally and resolved it's called a defect.