Debugging and whitebox testing goes hand in hand and 
typically done by the developers.
Debugging is done to verify that the program runs smoothly 
and running program shouldn't cause any unwanted response 
by the machine.
whitebox testing is nothing but running the program and 
verify the actual behavior/result of the functionality with 
expected result as predetermined. 

Debugging is the process of executing the applcation to 
locatate for bugs or faults in the application.
bug or fault is a condition which causes the application to 
fail. Bug is different from defect or error.
White box testing is the process of executing  the system 
with intent of checking the internal behaviour of the 
application. It includes statement coverage, Condition 
coverage, branch coverage etc.

Debugging is the process done by development team.They fix 
the defects which were reported by Testing team.

White box testing:Code level testing is called as white box 
testing.

Hi


Debugging process: To find a solution to a defect cause.
                  
White Box Testing : To find a defect by executing a program 
                    or companent at the souce code.

debugging means testing the  application line by line that 
is done by developers 
testing the application having  knowledge on the  internal 
logical structure of the applcation  is known as white box 
testing .
 
both are same

debugging is conducted by a programmer and the programer 
fix the errors during debugging phase
tester never fixed the errors but rather find them and 
return to programmer

Debugging: The process of analysing and correcting 
syntactic, logic and other errors identified during testing.

White box testing:. This technique is usually used during 
tests executed by the development team, such as Unit or 
Component testing.