Possible Duplicate:Difference between defect and bug in testing In computer science technical writing, especially in software engineering, what's the difference between fault, error and defect?I want to quote an answer on Stack OverFlow by Daniel Joseph:To quote the Software Engineering Body of  KnowledgeTypically, where the word defect is used, it refers to a fault as  defined below. However, different cultures and standards may use  somewhat different meanings for these terms, which have led to  attempts to define them. Partial definitions taken from standard  (IEEE610.12-90) are:Error: A differencebetween a computed result and the correct resultFault: An incorrect step, process, or data definition in a computer  programFailure: The [incorrect] result of a faultMistake: A human action that produces an incorrect resultBased on my understanding of above definition, error is the result of fault, i.e., failure. Could someone explain more clearly?
What's the difference between fault, error and defect?
terminology;quality