The GRC’s Quality Report on the following:

Quality Control (QC) is a set of activities for ensuring quality in the Products. The activities focus on identifying defects within the actual products produced.

Quality Assurance (QA) Quality Assurance is a set of activities for ensuring Quality in the Processes by which products are developed.
Also, elements in the quality system might not be specifically covered by QA/QC activities and responsibilities but may involve QA and QC.

Auditing is part of the quality assurance function. It is important to ensure quality because it is used to compare actual conditions with requirements and to report those results to management.