Many. I'm too lazy to list them. My favorite one is using wingardium leviosa on a human and smashing them around until all their bones break

I'm just creative ok

Too many to count

There are basically limitless ways to die in real life and all of those still apply in Harry Potter. When you add magic on top of that, it isn’t really possible to count.

Also, wingardium leviosa just makes things hover. You wouldn’t be able to smash somebody around with that. You could just drop them though.

You could use wingardium leviosa to pick up someting really heavy and then drop that on a person?

It's infinite if you're creative (and scary) enough. For example, Imperius-ing used to make a mosquito fly down someone’s stomach before turning it into a pair of boots. (And by someone, I mean Umbridge ofc.)

Obvs

AVADA KEDAVRA!!!!!!!!!!!!!!!!!!!!!!1

Infinity next question