It all depends on your perspective.

Are you yanking into your kill ring or yanking out of your kill ring? I had trouble with yanking and killing until I realized the complement to yanking, killing, only makes sense in the into-the-kill-ring" direction, so yanking must be out of the kill ring.

When I use vim, which I don't think has a kill ring but registers, I think I am yanking into a register and then pasting from a register later.

So, just ask yourself this: "are you using a kill ring or register to store your text?" and the answer becomes clear.