Can someone explain the different in between Polygon POL and MATIC?

Also is it just completely dead with no chance of revival? I don’t know much about Polygon, I just bought a little because it’s pretty cheap and it has been a bigger name in the crypto space.

What’s actually going on with this coin right now? Is there still real development happening or has attention shifted elsewhere? Are devs/users still building on it or moving to other chains? How does it compare to competitors long term? Is this just a cycle dip or something deeper? What would need to happen for a real comeback?

Interested in any/all opinions