All problems in software are known as BUGS
Software Tester has some attitude to work in Software Industry efficiently - as when Software Tester find BUGS and send to the developer for fixing they generally replied that we have done testing from our end and the Software is working properly as per expectation and you (the Tester) are giving some wrong input and hence getting the wrong result.
At that time Software Tester need to be at cool pace and try to write the BUG in detail, record video, provide time-span, take snap-shot for each bug encountered.
Sofware Tester has to give a solid reason in a very good manner for each BUG encountered.
Whats is a BUG : A person makes an ERROR creates a fault in software causes a failure in operation.
Software is written by human beings : Software Developer who knows
something but not everything
Who have skills but not perfect
Under increasing pressure when the delivery is as per strict guidelines
No time to check the application and assumptions are wrong
i. All business requirements are implemented
ii. Does not harm the business reputation
iii. Functionality are behaving as expected
iv. Does not break under working circumstances