A few years back while I was in my ISO 9001 training course, I met with many professionals involved in quality management. They were all from different backgrounds and were working in different fields.
During these discussions I met with a guy and we started talking. He told me that he was working as a QA/QC engineer in his company.
QA/QC stands for quality assurance and quality control.
I asked him about his job responsibilities and what he does.
He replied that he walks around and sees if everything is going on as planned or not.
He checks the items for correctness, and if he finds any deviation from the specifications, he will take corrective action.
I said fine, this takes care of the quality control part of your job, what about quality assurance?