It includes activities that ensure the verification of a developed software with respect to documented (or not in some cases) requirements.
Quality control

It includes activities that ensure the verification of a developed software with respect to documented (or not in some cases) requirements.
It includes activities that ensure the identification of bugs/error/defects in a software. It involves identifying bug/error/defect in a software without correcting it.
Normally professionals with a quality assurance background are involved in bugs identification. Testing is performed in the testing phase.