Difference between defect error and failure?

Question

What is difference between defect error and failure?

Satyapriya Nayak · Answer

Error : A discrepancy between a computed observed or measured value or condition and the true specified or theoretically correct value or condition. See: anomaly bug defect exception and fault Failure: The inability of a system or component to perform its required functions within specified performance requirements. See: bug crash exception fault. Bug: A fault in a program which causes the program to perform in an unintended or unanticipated manner. See: anomaly defect error exception fault. Fault: An incorrect step process or data definition in a computer program which causes the program to perform in an unintended or unanticipated manner. See: bug defect error exception. Defect: Mismatch between the requirements. http://software-testing-faq.blogspot.in/2007/08/difference-between-defecterrorbugfailur.html http://www.sqatester.com/bugsfixes/bugdefecterror.htm

nallya · Answer

Difference between defecterrorbugfailure and fault Error : A discrepancy between a computed observed or measured value or condition and the true specified or theoretically correct value or condition. See: anomaly bug defect exception and fault Failure: The inability of a system or component to perform its required functions within specified performance requirements. See: bug crash exception fault. Bug: A fault in a program which causes the program to perform in an unintended or unanticipated manner. See: anomaly defect error exception fault. Fault: An incorrect step process or data definition in a computer program which causes the program to perform in an unintended or unanticipated manner. See: bug defect error exception. Defect: Mismatch between the requirements. SOURCE:http://software-testing-faq.blogspot.in/2007/08/difference-between-defecterrorbugfailur.html

Difference between defect, error and failure?