Bug: It is found
in the development environment before the product is shipped to the respective
customer.
Defect: It is
found in the product itself after it is shipped to the respective customer's
Error: It is the Deviation from actual and the expected value.
Error: A failure to complete a task
Defect: A fault or malfunction , error or irregularity.
Bug: this means is that if you don't know how to get around this, you may loose some of your work.
Error: The Difference Between Actual & expected Result.
Defect: Any error in the software that is detected after the application is released.
Bug: Any error in the software that is detected before the application is released
Error: Any functionalty is wrong than its called Error.
Defect: If this incorrect functionality occour by tester then it is called Defect.
Bug: If this incorrect functionality Confirmed by developer then it is called Bug.
