Yes

Bug : Any discrepancy found during testing of software 
product.

Defect: Any discrepancy found by the customer in the 
software product after the release in to production

Error: Any discrepancy in the coding

Error : the amount by which the result is incorrect

Bug    : incorrect part of code caused by an error

Defect  : The diffrence between expected and actual result

DEFECT is introduced into the software as a result of an
ERROR at the input that may cause the system to behave
incorrectly and not according to the specification.

Error: It is a mistake,misconception or misunderstanding on
the part of a software engineer. When mistakes or errors
occur at the input side then they enter into the system as
faults/defects which further lead to the FAILURE of the system.

There is no difference in these terminologies unless 
specified by the management of your particular company. 
There have been many different assignments of meanings to 
each of these terminologies and you may find that where you 
work, there is a difference, but globally there is none.

Error : It is a human mistake

Bug: It is incorrect part of code caused by an  error

Defect: The difference between actual value and expected 
value

Bug is software error which is not properly working in the 
application.
Defect is any one of these..
either insufficient in the SRS,
insufficient in DD's(Design Documents)
it may be any defect right from beginning of the 
development life cycle.
Error means it is mistake done by the programmers.

Bug - Is Differernce between actual and expected output,

Defect -Defects occur usually when a product no longer 
works the way it used to.It is usually found after the 
release of software


Error - programmatically mistake leads to error.
When we get the wrong output i.e. syntax error, logical 
error

Error: Mistake or Misconception on the part of a Test 
Engineer.

Bug: Don't know the Answer...

Defect: I am Appreciated.

error: is discrepancy in the s/w is error

bug: is deviation from the expected

defect: its similar to bug. Bug found in clients           
environment after the release of the application

Any mistake in programe is called an Error.
The mistake found by tester during the testing can be 
called as Defect.
If the report the defect accepted by developer to resolve 
then defect becomes Bug.

any mistake in code is an error, when detected by a tester 
its a defect and when its accepted by the developer its a 
bug.

yes.
error-discrepancy at the time of coding is error.

bug-discrepancy atv the time of testing is a bug.

defect-when the output doesn't match with desired output 
then it is defect.