Answer / vinay bhatnagar

According to my understanding

Error- Error is obviously a mistake and an error is always a
bug.

Bug- Bug is not always a mistake, example- if we prepare one
system which having more features then client requirement so
its not a error because system is working good with more
features but its a bug as system is not according to the
requirement.

Thanks and Regards
Vinay Bhatnagar

Answer / amiricks

Hi friends as far as i know

Error :- we can face error if only any syntax,logical,code
error is there in the application, so it may be defined as
Any human action that produce a problem in the system
termed as an error.

Defect:- Deviation from Expected result to actual result is
called defect

Bug:- It is an informal name given to a defect

Failure :- When this deviation is found by the end user
while using the application is called .

If i am wrong please correct me

Answer / vijay

Error: when developer is find any mistake in his environment about application that situation called error.

Bug: developer send the application to testing environment, tester find any error is called bug. again tester assign to developer for fix the Bug.

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