Difference between Defect, Error, Bug

What is the Difference between Bug, Error and Defect - Software Engineering

Software Engineers, testers and Programmers use these terminologies interchangeably without knowing that these are different things.

Error: If I write a program which is not getting compiled due to the mistake in syntax that is known as error.

Bug:  If program is ruining but there is deviation between expected result and actual result that is due to bug.

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