Deference between Software Quality Control and Software Quality Assurance

SQC: Quality Control is Software product focused.
SQA: Quality Assurance is process focused.
SQC: Ensuring the quality in software products.
SQA: Ensuring the quality in software engineering process.
SQC: SQC is detection  oriented.
SQA: SQA is prevention oriented.
SQC: Relates to specific  product activities.
SQA: Relates to all products.
SQC: A process of validation.
SQA: A process of verification.