Actually most modern handguns are loaded using magazines.
There is an easy way to differentiate between clips and magazines, sadly people, especially the media are most often mistaken.
I'm not guaranteeing this method of differentiation has a 100% accuracy, but:
If it holds bullets and is used to slide the bullets into the weapon (into it's magazine well). It's a clip.
If it hold bullets and is inserted into the weapon, it's a magazine.
Some people might say, they both hold bullets, what does it matter? I reply to that with this: RAM, Hard Disk Drives, they both have GB's, what does it matter?