what is the diffrence between bug, error,defect??

Answer Posted / siva

Error: Error can be either syntax mismatch or runtime (ex:
even though code compiles correctly some times it won't run
correctly due dynamic linking of dlls) error or logical error
(ex: c = a + b, in C language that code works for 2 + 3 but
not for 35655 + 35655, which is a logical error)

Bug: When test engineer finds an issue first he confirms
whether this is issue or not by look at functional spec. If
he confirms its a bug, then it is called as bug.

Defect: When test engineer files/tracks that bug in a bug
tracking tool like Bugzilla or QC something like that there
after Bug becomes Defect.

But in general usage both bug & defect are same

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