What is the difference between bug,defect, error, failulre,
fault & mistake?

Answers were Sorted based on User's Feedback



What is the difference between bug,defect, error, failulre, fault & mistake?..

Answer / rizwan

Error is human made mistake
Defect is when this mistake is present in the component or
application.
Failure is the deviation from what the system is supposed to
do due to the presence of defect

Is This Answer Correct ?    98 Yes 35 No

What is the difference between bug,defect, error, failulre, fault & mistake?..

Answer / mrs phogat

BUG: A Bug is a Application Error, in Software doesn't
affect the whole application in terms of running.It doesn't
stop the execution of application.It produces wrong output.
OR
Anything that prevents the software program to perform
its required function.
OR
Any thing that effects functionality.


Error : A mistake made by programmer.
OR
Anything that stops the execution of application.

FAULT: An incorrect step, process, or data definition in a
computer program which prevents the program to perform an
intended or anticipated manner.

FAILURE: A failure occurs when a fault is executed.The
inability of a system or component to perform its required
functions within specified performance requirements.

DEFECT : If a problem occurs once the application is hanged
to the end user or client.

we Can Say:
Error >> Fault >> Failure >> Defect

Is This Answer Correct ?    80 Yes 21 No

What is the difference between bug,defect, error, failulre, fault & mistake?..

Answer / rudraneel

Bug/Defect :

A bug or defect is a flaw in a system or system component
which may cause the system or the system component fail to
perform its desired action.

Error :
It is a human mistakes

Failure :
If the product or the application falied to perform its
desired action according to end-uesr prospective.

Fault :
It is a incorrect intermediate statement encounter during
program execution

Mistake :
Nothing but error raised by human action

Is This Answer Correct ?    40 Yes 7 No

What is the difference between bug,defect, error, failulre, fault & mistake?..

Answer / raghavendra chitral

Defect is the deviation from Requirements given by
customer/client.(Black Box Testing)
Error is related to the development activities it may be
synatctical or logical error.(White box testing)
Failure is the impact of error/defect on other features of
program or application.(Black box testing)
Bug is the informal name given to defect(BBT)

Is This Answer Correct ?    48 Yes 19 No

What is the difference between bug,defect, error, failulre, fault & mistake?..

Answer / geetha

Bug: If there is any mistakes in the coding is called Bug.

Defect: Bug leads to Defect in the component.

Error: The mistakes made by Human Being is called error.

Failure: If the defect comes to the end user is called
Failure.
(Or) the mismatch of actual and the expected is also a
defect.

Is This Answer Correct ?    15 Yes 6 No

What is the difference between bug,defect, error, failulre, fault & mistake?..

Answer / yara

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.

Is This Answer Correct ?    4 Yes 0 No

What is the difference between bug,defect, error, failulre, fault & mistake?..

Answer / anitha

Error : It is the human mistake done on the part of the
developers

Defect : Deviation or variation between expected result and
actual result

Bug : Defect and bug are almost same.the term bug which is
used in the place of defect.It is a informal term.

Fault : The error which has occured after completion of the
product

Failure : when the defect is visible to end users

Since we say

error,defect,bug - process related errors
fault,failure - product related errors

Is This Answer Correct ?    4 Yes 1 No

What is the difference between bug,defect, error, failulre, fault & mistake?..

Answer / nitin

>> The programmer makes a mistake also known as an error.
This may be due to incomplete/ incorrect knowledge of the
program's internal structure.
>> The programmatic manifestation of the mistake/ error is
known as a Bug or Defect.
>> The difference between the Expected behavior and actual
behavior is known as an anomaly.
>> The anomaly is then investigated to determine the Failure.

Is This Answer Correct ?    1 Yes 0 No

What is the difference between bug,defect, error, failulre, fault & mistake?..

Answer / taruna kalra

bug is any kind of mistake encountered while testing
error is a logical or a syntactical one made by the programmer
fault is the intermediate steps while execution which
disrupts the normal program flow
failure is something which happens when a faulty code is
executed for example the execution of the infinite loop.

Is This Answer Correct ?    3 Yes 3 No

What is the difference between bug,defect, error, failulre, fault & mistake?..

Answer / rana ji

“A mistake in coding is called error ,error found by tester is called defect, defect accepted by development team then it is called bug ,build does not meet the requirements then it Is failure.”

Is This Answer Correct ?    1 Yes 1 No

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