Genocide or Not in Syria?

The war that was going on in Syria, I believe was a genocide. even though in one of  the articles I had read about it was that Syria hasn't fully came to decide on whether it was a genocide or not, and then you have the killers denying that everything that had happened happen. Its a genocide i think when one or more groups are being killed off to in a sense "make the country better". so I think what happened in Syria is a genocide even though the killers are denying it.