Qualification: an official record or document (such as a degree, certificate, or diploma) which shows that you have completed a course of study or training and are qualified to do something
Degree: an official document and title that is given to someone who has successfully completed a series of classes at a college or university
Certificate simply indicates that its recipient has completed a series of courses focusing on a particular subject
License: an official document that shows that permission has been given to do, own or use something
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