Static vs dynamic QR codes 

Yes, that's essentially what it is. A Dynamic QR code is indeed just a normal QR code, but the industry has collectively uses the term "dynamic QR codes" for QR codes that use redirect links. So when you go to a QR code generator and toggle the "Dynamic" option when creating a QR code, it means that instead of encoding the scan destination directly onto the QR code, the generator will create a redirect link and encode that onto the QR code instead. There's nothing "special" about the QR code itself, but more how it's used. This video helps people understand what it means when they go to a QR code generator and select the "Dynamic" option.