Answer / shivanibehere

Bug:-- Bug is identified by the tester.
Deffect:-- Whenever the project is received for the
analisys phase ,may be some requirement miss to get or
understand most of the time Defect itself come with the
project (when it comes).
Issue :-- Client site error most of the time.
Error :-- When anything is happend wrong in the project
from the development side ie. called as the error ,most of
the time this is knowing by the developer.

Answer / sriharsha

Bug : a fault or defect in a system or machine

Defect : an imperfection in a device or machine;

Issue : An issue is a major problem that will impede the
progress of the project and cannot be resolved by the
project manager and project team without outside help

Error :
Error is the deviation of a measurement, observation, or
calculation from the truth

Answer / jawahar

Error:
•This is terminology of developer
•Syntax error, logical error, run time error, compilation
error etc..
Bug:
•This is terminology of tester
•Mismatch between the Expected result & Actual result.
•Anything that causes customer dissatisfaction.
Defect:
•Deviation (Mismatch) from the client requirement /
Specification
•Eg: Add func 2+2 = 4 (correct); 2+2 = 0 (defect)
Issue:
client having fault in the project or product.

Answer / madhusudan b

Error: Deviation from requirement.

Defect: Mismatch found by the tester.

Bug: Defect accepted by the Developer

Answer / raja reddy

Bug : Logical deviation- it will effect on the system but
not known until we found the bug. ( Clock completes one
cycle in 11 hrs instead of 12hrs)

Deffect: Mismatch with expected results. (Ex: Clock
rotating in anticlock direction)

Error: System will stop functioning. Reason unhadled
exception or syntax or special chars.

Issue : Descriptive Functional points like Change request.

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