
There’s a very fine line between quality assurance and quality control, and both these terms are often used interchangeably.
Quality assurance is the concept stating that the necessary actions, procedures, inspections, and audits will be done or have been done in a particular project to assure the quality of it.
Quality control, on the other hand, is the very act of carrying out all the necessary procedures and seeing to it that all parts of the project are carried out in the absolute correct way restricting the loss of quality. It may include inspection, maintenance, and audits.